1. 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) = 4x2 + 5x - 6; f(x - 1)
A) -3x2 + 4x - 7
B) 4x2 - 3x - 7
C) 4x2 - 3x + 3
D) 4x2 - 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.