Graphs

Precalculus Enhanced with Graphing Utilities ยท 513 exercises

Q 9.

Find the center and radius of the circle. Write the standard form of the equation.

3 step solution

Q 10.

Find the center and radius of the circle. Write the standard form of the equation.

3 step solution

Q 11.

Write the standard form of the equation and the general form of the equation of each circle of radius r and center h,k.

Graph each circle.

r=2;  (h,k)=(0,0)

4 step solution

Q 12.

Write the standard form of the equation and the general form of the equation of each circle of radius r and center h,k.

Graph each circle.

r=3;  (h,k)=(0,0)

4 step solution

Q 13.

Write the standard form of the equation and the general form of the equation of each circle of radius r and center h,k.

Graph each circle.

r=2;  (h,k)=(0,2)

4 step solution

Q 14.

Write the standard form of the equation and the general form of the equation of each circle of radius r and center h,k.

Graph each circle.

r=3;  (h,k)=(1,0)

4 step solution

Q 15.

Write the standard form of the equation and the general form of the equation of each circle of radius r and center h,k.

Graph each circle.

r=5;  (h,k)=(4,-3)

4 step solution

Q 16.

Write the standard form of the equation and the general form of the equation of each circle of radius r and center h,k.

Graph each circle.

r=4;  (h,k)=(2,-3)

4 step solution

Q 17.

Write the standard form of the equation and the general form of the equation of each circle of radius r and center h,k.

Graph each circle.

r=4;  (h,k)=(-2,1)

4 step solution

Q 18.

Write the standard form of the equation and the general form of the equation of each circle of radius rr and center h,k.

Graph each circle.

r=7;  (h,k)=(-5,-2)

4 step solution

Q 19.

Write the standard form of the equation and the general form of the equation of each circle of radius r and center h,k.

Graph each circle.

r=12,  (h,k)=12,0

4 step solution

Q 20.

Write the standard form of the equation and the general form of the equation of each circle of radius r and center h,k.

Graph each circle.

r=12,  (h,k)=0,-12

4 step solution

Q 21.

In problem, (a) find the center h,k and radius rof each circle; (b) graph each circle; (c) find the intercepts, if any.

x2+y2=4

4 step solution

Q 22.

In Problems, (a) find the center h,k and radius r of each circle; (b) graph each circle; (c) find the intercepts, if any.

x2+(y-1)2=1

4 step solution

Q 23.

In Problem, (a) find the center h,k and radius r of each circle; (b) graph each circle; (c) find the intercepts, if any.

2(x-3)2+2y2=8

4 step solution

Q 24.

In Problem, (a) find the center h,k and radius r of each circle; (b) graph each circle; (c) find the intercepts, if any.

3(x+1)2+3(y-1)2=6

4 step solution

Q 25.

In Problem, (a) find the center h,k and radius r of each circle; (b) graph each circle; (c) find the intercepts, if any.

x2+y2-2x-4y-4=0

4 step solution

Q 26.

In Problem, (a) find the center h,k and radius r of each circle; (b) graph each circle; (c) find the intercepts, if any.

x2+y2+4x+2y-20=0

4 step solution

Q 27.

In Problem, (a) find the center (h,k) and radius r of each circle; (b) graph each circle; (c) find the intercepts, if any.

x2+y2+4x-4y-1=0

4 step solution

Q 28.

In Problem, (a) find the center h,k and radius r of each circle; (b) graph each circle; (c) find the intercepts, if any.

x2+y2-6x+2y+9=0

4 step solution

Q 29.

In Problem, (a) find the center h,k and radius r of each circle; (b) graph each circle; (c) find the intercepts, if any.

x2+y2-x+2y+1=0

4 step solution

Q 30.

In Problem, (a) find the center h,k and radius r of each circle; (b) graph each circle; (c) find the intercepts, if any.

x2+y2+x+y-12=0

4 step solution

Q.31

 Find (a)  the center (h, k) and radius r of each circle; (b) graph each circle; (c) find the intercepts if any of

2x2+2y2-12x+8y-24=0

8 step solution

Q. 32

Find (a)  the center (h, k) and radius r of each circle; (b) graph each circle; (c) find the intercepts if any of the equation 2x2+2y2+8x+7=0

7 step solution

Q. 33

Find (a)  the center (h, k) and radius r of each circle; (b) graph each circle; (c) find the intercepts if any of the equation 2x2+8x+2y2=0

5 step solution

Q. 34

Find (a)  the center (h, k) and radius r of each circle; (b) graph each circle; (c) find the intercepts if any of the equation 3x2+3y2-12y=0

5 step solution

Q.35

Find the standard form of the equation of each circle.

Center at the origin and containing the point (-2, 3)

3 step solution

Q.36

Find the standard form of the equation of each circle.

Center (1, 0) and containing the point 

( -3, 2)

3 step solution

Q.37

Find the standard form of the equation of each circle.

Center (2, 3) and tangent to the x-axis

3 step solution

Q.38

Find the standard form of the equation of each circle.

Center (-3, 1) and tangent to the y-axis

3 step solution

Q.39

Find the standard form of the equation of each circle.

Circle with endpoints of a diameter at (1, 4) and (-3, 2)

3 step solution

Q.40

Find the standard form of the equation of each circle.

Circle with endpoints of a diameter at (4,3) and (0,1)

3 step solution

Q.41

Find the standard form of the equation of each circle.

Center (-1, 3) and tangent to the line y = 2

3 step solution

Q.42

Find the standard form of the equation of each circle.

Center (4,-2) and tangent to the line x = 1

3 step solution

Q.43

match each graph with the correct equation.(a) (x-3)2+(y+3)2= 9,  (b) (x+1)2+(y-2)2=4 , (c) (x-1)2+(y+2)2=4 , (d) (x+3)2+(y-3)2=9



6 step solution

Q.44


match each graph with the correct equation.(a) (x-3)2+(y+3)2= 9,  (b) (x+1)2+(y-2)2=4 , (c) (x-1)2+(y+2)2=4 , (d) (x+3)2+(y-3)2=9 



6 step solution

Q.45


match each graph with correct equation

(a) (x-3)2+(y+3)2= 9,  (b) (x+1)2+(y-2)2=4 , (c) (x-1)2+(y+2)2=4 , (d) (x+3)2+(y-3)2=9 

6 step solution

Q.46


match each graph with correct equation

(a) (x-3)2+(y+3)2= 9,  (b) (x+1)2+(y-2)2=4 , (c) (x-1)2+(y+2)2=4 , (d) (x+3)2+(y-3)2=9  

6 step solution

Q1.

Suppose the points -2,-3 and 4,5 are the endpoints of a line segment.

(a) Find the distance between the two points.

(b) Find the midpoint of the line segment connecting the two points.

(a) Find the distance between the two points.

(b) Find the midpoint of the line segment connecting the

two points.

4 step solution

Q 2.

Graph the  equation by hand by plotting

points. Use a graphing utility to approximate the intercepts and label them on graph.

2x-7y=21

3 step solution

Q 3.

Graph the equation by hand by plotting

points. Use a graphing utility to approximate the intercepts and label them on the graph .

label them on the graph. 

y=x2-5

3 step solution

Q 4.

Use a graphing utility to approximate the real solution of equation rounded to two decimal place . All solution lie between -10 and 10.

Equation is 2x3-x2-2x+1=0.


3 step solution

Q 5.

Use a graphing utility to approximate the real solution of the equation rounded to two decimal places .All solution lie between -10 and 10.

Equation is x4-5x2-8=0

3 step solution

Q 6.

Use a graphing utility to approximate the real solution of the equation rounded to two decimal places.All the solution lie between -10 and 10.

Equation is -x3+7x-2=x2+3x-3.

3 step solution

Q 7.

Use P1=-1,3 and P2=5,-1.

(a) Find the slope of the line containing P1 and P2.

(b) Interpret this slope.

3 step solution

Q 8.


Sketch the graph of y2=x.



2 step solution

Q 9.

List the intercepts and test for symmetry: x2+y=9.

4 step solution

Q 10.

Write the slope–intercept form of the line with the slope -2 containing the point 3,-4.Graph the line.

3 step solution

Q11.

Write the general form of the circle with center 4,-3 and radius 5.

2 step solution

Q 12.


Find the center and radius of the circle

x2+y2+4x-2y-4=0. Graph this circle.




3 step solution

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