Determine whether the relation is a function.

{(-2, -7), (3, -5), (6, -4), (9, -6), (10, -1)}

A) Not a function

B) Function

2. Determine whether the relation is a function.

{(-5, -4), (-2, 9), (-1, -2), (-1, 7)}

A) Function

B) Not a function

3. Determine whether the relation is a function.

{(-7, -1), (-7, 2), (-1, 8), (3, 3), (10, -7)}

A) Not a function

B) Function

4. Determine whether the relation is a function.

{(1, -3), (1, 1), (6, -8), (9, -3), (11, -3)}

A) Not a function

B) Function

5. Determine whether the relation is a function.

{(-6, -9), (-2, 1), (1, -1), (7, -7)}

A) Not a function

B) Function

6. Determine whether the equation defines y as a function of x.

x + y = 9

A) y is a function of x

B) y is not a function of x

7. Determine whether the equation defines y as a function of x.

x2 + y2 = 1

A) y is a function of x

B) y is not a function of x

8. Determine whether the equation defines y as a function of x.

x = y2

A) y is a function of x

B) y is not a function of x

9. Evaluate the function at the given value of the independent variable and simplify.

f(x) = -3x – 8; f(-2)

A) 14

B) -11

C) -2

D) 22

10. Evaluate the function at the given value of the independent variable and simplify.

f(x) = x2 – 1; f(x – 2)

A) x2 + 4

B) x2 – 4x + 3

C) x2 – 3

D) x2 – 4x + 4

11. Evaluate the function at the given value of the independent variable and simplify.

f(x) = 4×2 + 5x – 6; f(x – 1)

A) -3×2 + 4x – 7

B) 4×2 – 3x – 7

C) 4×2 – 3x + 3

D) 4×2 – 19x + 3

12. Evaluate the function at the given value of the independent variable and simplify.

f(x) = ; f(5)

A)

B)

C)

D)

13. Find the slope of the line that goes through the given points.

(3, -5), (-9, -8)

A) -

B)

C)

D) 4

14. Find the slope of the line that goes through the given points.

(-7, 6), (-7, -9)

A) Undefined

B)

C) 0

D) -

15. Find the slope of the line that goes through the given points.

(-1, 4), (5, 4)

A)

B) 0

C) 2

D) Undefined

16. Find the slope of the line that goes through the given points.

(-2, -6), (-9, -17)

A)

B)

C) -

D)

17. Find the slope of the line that goes through the given points.

(-8, 8), (-5, 2)

A)

B)

C) -

D) – 2

18. Find the slope of the line that goes through the given points.

(-3, -7), (9, -7)

A) 0

B) 1

C) -4

D) 4

19. Use the given conditions to write an equation for the line in point-slope form.

Slope = 4, passing through (-3, 7)

A) y – 7 = 4(x + 3)

B) y = 4x + 19

C) x – 7 = 4(y + 3)

D) y + 7 = 4(x – 3)

20. Use the given conditions to write an equation for the line in point-slope form.

Slope = , passing through (8, 7)

A) x – 7 = (y – 8)

B) y – 7 = (x – 8)

C) y + 7 = (x + 8)

D) y = x + 8