Chapter 8

College Algebra · 401 exercises

Problem 19

For the following exercises, rewrite the given equation in standard form, and then determine the vertex \((V),\) focus \((F),\) and directrix \((d)\) of the parabola. $$ (y-4)^{2}=2(x+3) $$

5 step solution

Problem 19

For the following exercises, write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foci, and write equations of asymptotes. $$ -9 x^{2}-54 x+9 y^{2}-54 y+81=0 $$

8 step solution

Problem 19

For the following exercises, find a new representation of the given equation after rotating through the given angle. $$4 x^{2}-x y+4 y^{2}-2=0, \theta=45^{\circ}$$

5 step solution

Problem 19

Write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foci, and write equations of asymptotes. \(-9 x^{2}-54 x+9 y^{2}-54 y+81=0\)

7 step solution

Problem 20

For the following exercises, convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{8}{3-2 \cos \theta} $$

9 step solution

Problem 20

Convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{8}{3-2 \cos \theta} $$

6 step solution

Problem 20

For the following exercises, write the equation of an ellipse in standard form, and identify the end points of the major and minor axes as well as the foci. $$ 9 x^{2}-54 x+9 y^{2}-54 y+81=0 $$

7 step solution

Problem 20

For the following exercises, rewrite the given equation in standard form, and then determine the vertex \((V),\) focus \((F),\) and directrix \((d)\) of the parabola. $$ (x+1)^{2}=2(y+4) $$

5 step solution

Problem 20

For the following exercises, write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foci, and write equations of asymptotes. $$ 4 x^{2}-24 x-36 y^{2}-360 y+864=0 $$

6 step solution

Problem 20

For the following exercises, find a new representation of the given equation after rotating through the given angle. $$2 x^{2}+8 x y-1=0, \theta=30^{\circ}$$

5 step solution

Problem 20

Write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foci, and write equations of asymptotes. \(4 x^{2}-24 x-36 y^{2}-360 y+864=0\)

7 step solution

Problem 21

For the following exercises, convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{3}{2+5 \cos \theta} $$

6 step solution

Problem 21

Convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{3}{2+5 \cos \theta} $$

5 step solution

Problem 21

For the following exercises, write the equation of an ellipse in standard form, and identify the end points of the major and minor axes as well as the foci. $$ 4 x^{2}-24 x+36 y^{2}-360 y+864=0 $$

6 step solution

Problem 21

For the following exercises, rewrite the given equation in standard form, and then determine the vertex \((V),\) focus \((F),\) and directrix \((d)\) of the parabola. $$ (x+4)^{2}=24(y+1) $$

6 step solution

Problem 21

For the following exercises, write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foci, and write equations of asymptotes. $$ -4 x^{2}+24 x+16 y^{2}-128 y+156=0 $$

6 step solution

Problem 21

For the following exercises, find a new representation of the given equation after rotating through the given angle. $$-2 x^{2}+8 x y+1=0, \theta=45^{\circ}$$

5 step solution

Problem 21

Write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foci, and write equations of asymptotes. \(-4 x^{2}+24 x+16 y^{2}-128 y+156=0\)

8 step solution

Problem 22

For the following exercises, identify the conic with a focus at the origin, and then give the directrix and eccentricity. $$ r=\frac{4}{2+2 \sin \theta} $$

4 step solution

Problem 22

For the following exercises, convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{4}{2+2 \sin \theta} $$

6 step solution

Problem 22

Convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{4}{2+2 \sin \theta} $$

5 step solution

Problem 22

For the following exercises, write the equation of an ellipse in standard form, and identify the end points of the major and minor axes as well as the foci. $$ 4 x^{2}+24 x+16 y^{2}-128 y+228=0 $$

6 step solution

Problem 22

For the following exercises, write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foci, and write equations of asymptotes. $$ -4 x^{2}+40 x+25 y^{2}-100 y+100=0 $$

7 step solution

Problem 22

For the following exercises, find a new representation of the given equation after rotating through the given angle. $$4 x^{2}+\sqrt{2} x y+4 y^{2}+y+2=0, \theta=45^{\circ}$$

5 step solution

Problem 22

For the following exercises, rewrite the given equation in standard form, and then determine the vertex \((V)\), focus \((F)\), and directrix \((d)\) of the parabola. $$(y+4)^{2}=16(x+4)$$

6 step solution

Problem 22

Write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foci, and write equations of asymptotes. \(-4 x^{2}+40 x+25 y^{2}-100 y+100=0\)

6 step solution

Problem 23

For the following exercises, identify the conic with a focus at the origin, and then give the directrix and eccentricity. $$ r=\frac{3}{8-8 \cos \theta} $$

4 step solution

Problem 23

For the following exercises, convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{3}{8-8 \cos \theta} $$

5 step solution

Problem 23

Convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{3}{8-8 \cos \theta} $$

6 step solution

Problem 23

For the following exercises, write the equation of an ellipse in standard form, and identify the end points of the major and minor axes as well as the foci. $$ 4 x^{2}+40 x+25 y^{2}-100 y+100=0 $$

7 step solution

Problem 23

For the following exercises, rewrite the given equation in standard form, and then determine the vertex \((V),\) focus \((F),\) and directrix \((d)\) of the parabola. $$ y^{2}+12 x-6 y+21=0 $$

4 step solution

Problem 23

For the following exercises, write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foci, and write equations of asymptotes. $$ x^{2}+2 x-100 y^{2}-1000 y+2401=0 $$

8 step solution

Problem 23

Write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foci, and write equations of asymptotes. \(x^{2}+2 x-100 y^{2}-1000 y+2401=0\)

6 step solution

Problem 24

For the following exercises, identify the conic with a focus at the origin, and then give the directrix and eccentricity. $$ r=\frac{2}{6+7 \cos \theta} $$

4 step solution

Problem 24

For the following exercises, convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{2}{6+7 \cos \theta} $$

5 step solution

Problem 24

Convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{2}{6+7 \cos \theta} $$

6 step solution

Problem 24

For the following exercises, rewrite the given equation in standard form, and then determine the vertex \((V),\) focus \((F),\) and directrix \((d)\) of the parabola. $$ x^{2}-4 x-24 y+28=0 $$

6 step solution

Problem 24

For the following exercises, write the equation of an ellipse in standard form, and identify the end points of the major and minor axes as well as the foci. $$ x^{2}+2 x+100 y^{2}-1000 y+2401=0 $$

6 step solution

Problem 24

For the following exercises, write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foci, and write equations of asymptotes. $$ -9 x^{2}+72 x+16 y^{2}+16 y+4=0 $$

6 step solution

Problem 24

Write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foci, and write equations of asymptotes. \(-9 x^{2}+72 x+16 y^{2}+16 y+4=0\)

6 step solution

Problem 25

For the following exercises, identify the conic with a focus at the origin, and then give the directrix and eccentricity. $$ r=\frac{5}{5-11 \sin \theta} $$

4 step solution

Problem 25

For the following exercises, convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{5}{5-11 \sin \theta} $$

8 step solution

Problem 25

Convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{5}{5-11 \sin \theta} $$

6 step solution

Problem 25

For the following exercises, write the equation of an ellipse in standard form, and identify the end points of the major and minor axes as well as the foci. $$ 4 x^{2}+24 x+25 y^{2}+200 y+336=0 $$

7 step solution

Problem 25

For the following exercises, rewrite the given equation in standard form, and then determine the vertex \((V),\) focus \((F),\) and directrix \((d)\) of the parabola. $$ 5 x^{2}-50 x-4 y+113=0 $$

6 step solution

Problem 25

For the following exercises, write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foci, and write equations of asymptotes. $$ 4 x^{2}+24 x-25 y^{2}+200 y-464=0 $$

9 step solution

Problem 25

Write the equation for the hyperbola in standard form if it is not already, and identify the vertices and foci, and write equations of asymptotes. \(4 x^{2}+24 x-25 y^{2}+200 y-464=0\)

9 step solution

Problem 26

For the following exercises, identify the conic with a focus at the origin, and then give the directrix and eccentricity. $$ r(5+2 \cos \theta)=6 $$

3 step solution

Problem 26

For the following exercises, convert the polar equation of a conic section to a rectangular equation. $$ r(5+2 \cos \theta)=6 $$

8 step solution

Problem 26

Convert the polar equation of a conic section to a rectangular equation. $$ r(5+2 \cos \theta)=6 $$

8 step solution

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