8. Quadratic function y is given below in vertex form. What is the vertex and axis of symmetry for it?

y = -2 (x-5)² -3

Group of answer choices

A. (5, 3), x=5

B. none of the answers given here

C. (5, -3), x=5

D. (-5, -3), x=-5

9. let f(x) = 3x²-4x+1,

find f(-2)

Group of answer choices

A. 5

B. 19

C. 21

D. none of the answers given here

10. let f(x) = x²-5x

find (x+h)=

Group of answer choices

A. x²+h²-5x-5h

B. x²-xh+h²-5x-5h

C. x² +2xh+h²-5x-5h

D. none of the answers given here

11. use calculator to find Max. point of the function given below:

f(x) = x³ + 1.5 x² - 6 x

Group of answer choices

A. none of the answers given here

B. (-2, 10)

C. (-2, 26)

D. (1, -3.5)

12. Give decreasing interval for thisfunction in interval notation.

f(x) = x³ + 1.5 x² - 6 x

Group of answer choices

A. (-2,1)

B. (-1, 2)

C. none of the answers given here

D. (1,2)

13. Find slope of a line that connects points (-1,2) and (1, 6).

Group of answer choices

A. 1

B. 2

C. none of the answers given here

D. -2

14. Find the equation of a line that goes through point (-1, 3) and its slope is 2. Simplify your answer.

Group of answer choices

A. y=2x+1

B. none of the answers given here

C. y=2x+5

D. y=-2x-6

15. Find domain of the function given here:

y= x-5

Group of answer choices

A. any real number greater or equal to five

B. none of the answers given here

C. all real numbers

D. any real number less than five

16. Find equation of the vertical asymptotes for this rational function:

f(x)= (2x-3)/(x²-x-2)

Group of answer choices

A. x=-1, x=2

B. x=-2, x=1

C. none of the answers given here

D. x=1, x=2

17.Find equation of the horizontal asymtotes for the rational function given below:

f(x)= (2x²-3x)/(x²-x-2)

Group of answer choices

A. none of the answers given here

B. y=-2

C. y=2

D. y=0

18. A third degree polynomial f(x) has x= -2 as one of its zeros.

What would be one of its factor?

Group of answer choices

A. (x+1)

B. (x-1)

C. (x+2)

D. (x-2)

19. Use your graphing calculator find all zeors of f(x)=x³ -3x² -x +3

They are?

Group of answer choices

A. -1, 1, 3

B. -1.1, 1, 3.1

C. -1, 1.1, 3.2

D. -1, 1, 3.1

20.What is the y intercept of this rational function:

f(x) = (3x² -2x -1)/(2x² +3x -2)

Group of answer choices

A. y=3/2

B. none of the answers given here

C. y=-1/2

D. y=1/2