Posted by **Josh** on Wednesday, August 22, 2012 at 5:02pm.

1. Determine whether the relation is a function.

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

2. Determine whether the relation is a function.

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

3. Determine whether the relation is a function.

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

4. Determine whether the relation is a function.

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

5. Determine whether the relation is a function.

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

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

x + y = 9

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

x2 + y2 = 1

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

x = y2

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

f(x) = -3x - 8; f(-2)

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

f(x) = x2 - 1; f(x - 2)

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

f(x) = 4x2 + 5x - 6; f(x - 1)

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

f(x) = ; f(5)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Slope = , passing through (8, 7)

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