Chapter 8

College Algebra · 401 exercises

Problem 26

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. $$ y^{2}-24 x+4 y-68=0 $$

4 step solution

Problem 26

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. $$ 9 x^{2}+72 x+16 y^{2}+16 y+4=0 $$

7 step solution

Problem 26

For the following exercises, find the equations of the asymptotes for each hyperbola. $$ \frac{y^{2}}{3^{2}}-\frac{x^{2}}{3^{2}}=1 $$

3 step solution

Problem 26

Find the equations of the asymptotes for each hyperbola. \(\frac{y^{2}}{3^{2}}-\frac{x^{2}}{3^{2}}=1\)

3 step solution

Problem 27

For the following exercises, identify the conic with a focus at the origin, and then give the directrix and eccentricity. $$ r(2-\cos \theta)=1 $$

5 step solution

Problem 27

For the following exercises, convert the polar equation of a conic section to a rectangular equation. $$ r(2-\cos \theta)=1 $$

7 step solution

Problem 27

Convert the polar equation of a conic section to a rectangular equation. $$ r(2-\cos \theta)=1 $$

7 step solution

Problem 27

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. $$ x^{2}-4 x+2 y-6=0 $$

5 step solution

Problem 27

For the following exercises, find the foci for the given ellipses. $$ \frac{(x+3)^{2}}{25}+\frac{(y+1)^{2}}{36}=1 $$

5 step solution

Problem 27

For the following exercises, find the equations of the asymptotes for each hyperbola. $$ \frac{(x-3)^{2}}{5^{2}}-\frac{(y+4)^{2}}{2^{2}}=1 $$

5 step solution

Problem 27

Find the equations of the asymptotes for each hyperbola. \(\frac{(x-3)^{2}}{5^{2}}-\frac{(y+4)^{2}}{2^{2}}=1\)

5 step solution

Problem 28

For the following exercises, identify the conic with a focus at the origin, and then give the directrix and eccentricity. $$ r(2.5-2.5 \sin \theta)=5 $$

3 step solution

Problem 28

For the following exercises, convert the polar equation of a conic section to a rectangular equation. $$ r(2.5-2.5 \sin \theta)=5 $$

6 step solution

Problem 28

Convert the polar equation of a conic section to a rectangular equation. $$ r(2.5-2.5 \sin \theta)=5 $$

5 step solution

Problem 28

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. $$ y^{2}-6 y+12 x-3=0 $$

8 step solution

Problem 28

For the following exercises, find the foci for the given ellipses. $$ \frac{(x+1)^{2}}{100}+\frac{(y-2)^{2}}{4}=1 $$

4 step solution

Problem 28

For the following exercises, find the equations of the asymptotes for each hyperbola. $$ \frac{(y-3)^{2}}{3^{2}}-\frac{(x+5)^{2}}{6^{2}}=1 $$

5 step solution

Problem 28

For the following exercises, determine the angle ? that will eliminate the xy term and write the corresponding equation without the \(xy\) term. $$x^{2}+4 x y+4 y^{2}+3 x-2=0$$

6 step solution

Problem 28

Find the equations of the asymptotes for each hyperbola. \(\frac{(y-3)^{2}}{3^{2}}-\frac{(x+5)^{2}}{6^{2}}=1\)

5 step solution

Problem 29

For the following exercises, identify the conic with a focus at the origin, and then give the directrix and eccentricity. $$ r=\frac{6 \sec \theta}{-2+3 \sec \theta} $$

4 step solution

Problem 29

For the following exercises, convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{6 \sec \theta}{-2+3 \sec \theta} $$

5 step solution

Problem 29

Convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{6 \sec \theta}{-2+3 \sec \theta} $$

7 step solution

Problem 29

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. $$ 3 y^{2}-4 x-6 y+23=0 $$

4 step solution

Problem 29

For the following exercises, find the equations of the asymptotes for each hyperbola. $$ 9 x^{2}-18 x-16 y^{2}+32 y-151=0 $$

7 step solution

Problem 29

For the following exercises, determine the angle ? that will eliminate the xy term and write the corresponding equation without the \(xy\) term. $$x^{2}+4 x y+y^{2}-2 x+1=0$$

5 step solution

Problem 29

Find the equations of the asymptotes for each hyperbola. \(9 x^{2}-18 x-16 y^{2}+32 y-151=0\)

7 step solution

Problem 30

For the following exercises, identify the conic with a focus at the origin, and then give the directrix and eccentricity. $$ r=\frac{6 \csc \theta}{3+2 \csc \theta} $$

4 step solution

Problem 30

For the following exercises, convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{6 \csc \theta}{3+2 \csc \theta} $$

9 step solution

Problem 30

Convert the polar equation of a conic section to a rectangular equation. $$ r=\frac{6 \csc \theta}{3+2 \csc \theta} $$

4 step solution

Problem 30

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. $$ x^{2}+4 x+8 y-4=0 $$

4 step solution

Problem 30

For the following exercises, find the foci for the given ellipses. $$ x^{2}+4 y^{2}+4 x+8 y=1 $$

8 step solution

Problem 30

For the following exercises, find the equations of the asymptotes for each hyperbola. $$ 16 y^{2}+96 y-4 x^{2}+16 x+112=0 $$

5 step solution

Problem 30

Find the equations of the asymptotes for each hyperbola. \(16 y^{2}+96 y-4 x^{2}+16 x+112=0\)

5 step solution

Problem 31

For the following exercises, graph the given conic section. If it is a parabola, label the vertex, focus, and directrix. If it is an ellipse, label the vertices and foci. If it is a hyperbola, label the vertices and foci. $$ r=\frac{5}{2+\cos \theta} $$

5 step solution

Problem 31

Graph the given conic section. If it is a parabola, label the vertex, focus, and directrix. If it is an ellipse, label the vertices and foci. If it is a hyperbola, label the vertices and foci. $$ r=\frac{5}{2+\cos \theta} $$

4 step solution

Problem 31

For the following exercises, graph the parabola, labeling the focus and the directrix. $$ x=\frac{1}{8} y^{2} $$

6 step solution

Problem 31

For the following exercises, find the foci for the given ellipses. $$ 10 x^{2}+y^{2}+200 x=0 $$

6 step solution

Problem 31

For the following exercises, sketch a graph of the hyperbola, labeling vertices and foci. $$ \frac{x^{2}}{49}-\frac{y^{2}}{16}=1 $$

6 step solution

Problem 31

Sketch a graph of the hyperbola, labeling vertices and foci. \(\frac{x^{2}}{49}-\frac{y^{2}}{16}=1\)

6 step solution

Problem 32

For the following exercises, graph the given conic section. If it is a parabola, label the vertex, focus, and directrix. If it is an ellipse, label the vertices and foci. If it is a hyperbola, label the vertices and foci. $$ r=\frac{2}{3+3 \sin \theta} $$

6 step solution

Problem 32

Graph the given conic section. If it is a parabola, label the vertex, focus, and directrix. If it is an ellipse, label the vertices and foci. If it is a hyperbola, label the vertices and foci. $$ r=\frac{2}{3+3 \sin \theta} $$

6 step solution

Problem 32

For the following exercises, graph the given ellipses, noting center, vertices, and foci. $$ \frac{x^{2}}{25}+\frac{y^{2}}{36}=1 $$

6 step solution

Problem 32

For the following exercises, sketch a graph of the hyperbola, labeling vertices and foci. $$ \frac{x^{2}}{64}-\frac{y^{2}}{4}=1 $$

5 step solution

Problem 32

For the following exercises, rotate through the given angle based on the given equation. Give the new equation and graph the original and rotated equation. $$x=y^{2}, \theta=45^{\circ}$$

4 step solution

Problem 32

For the following exercises, graph the parabola, labeling the focus and the directrix. $$y=36 x^{2}$$

7 step solution

Problem 32

Sketch a graph of the hyperbola, labeling vertices and foci. \(\frac{x^{2}}{64}-\frac{y^{2}}{4}=1\)

7 step solution

Problem 33

For the following exercises, graph the given conic section. If it is a parabola, label the vertex, focus, and directrix. If it is an ellipse, label the vertices and foci. If it is a hyperbola, label the vertices and foci. $$ r=\frac{10}{5-4 \sin \theta} $$

5 step solution

Problem 33

Graph the given conic section. If it is a parabola, label the vertex, focus, and directrix. If it is an ellipse, label the vertices and foci. If it is a hyperbola, label the vertices and foci. $$ r=\frac{10}{5-4 \sin \theta} $$

5 step solution

Problem 33

For the following exercises, graph the parabola, labeling the focus and the directrix $$ y=\frac{1}{36} x^{2} $$

5 step solution

Problem 33

For the following exercises, graph the given ellipses, noting center, vertices, and foci. $$ \frac{x^{2}}{16}+\frac{y^{2}}{9}=1 $$

6 step solution

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