# Chater 2 Review

Is this a function?
(2, -1) (4, 5) (-2, 7), (5, 4)

Yes

Is this a function?
(-3, 8) (6, 8) (2, 8) (-1, 8)

Yes

Is this a function?
(-1, -3) (1, -2) (9, 2) (1, 7)

No

Find the information for a line that passes through the points (-3, 6) and (9, -2)
1. Slope
2. Equation in Point-Slope
3. y-intercept
4. Equation in Standard Form
5. Slope of a parallel line
6. Slope of a perpendicular line

1. -2/3
2. y - 6 = -2/3(x + 3)
3. y = -2/3x + 4
4. (0, 4)
5. ...
6. -2/3
7. 3/2

Determine restricted domain values.
f(x) = 7 / x

x != 0

Determine restricted domain values.
g(x) = 3 / 2x - 8

x != 4

Determine restricted domain values.
h(x) = x - 11 / x + 5

x != -5

For f(x) = x^2 - 9 and g(x) = x - 7, find and state domain of:
(f + g)(x)

x^2 + x - 16; D: R

For f(x) = x^2 - 9 and g(x) = x - 7, find and state domain of:
(f - g)(x)

x^2 - x + 2; D: R

For f(x) = x^2 - 9 and g(x) = x - 7, find and state domain of:
(f * g)(x)

x^3 - 7x^2 - 9x + 63; D: R

For f(x) = x^2 - 9 and g(x) = x - 7, find and state domain of:
(f / g)(x)

x^2 - 9 / x - 7; D: {x | x != 7}