1. ALGEBRA I @ LINEAR REVIEW
(and other stuff too)

2. Graph. 1)
2) 3x – 9y = 18

3. Graph. 3)
4) y = -2

4. ALGEBRA I - LINEAR REVIEW
12/30/2018
Graph.
5) y < -3x + 4

5. 6) While on a business trip to Seattle, Kody rents a car for a flat fee of $45 and $33 per day. Write an equation expressing the amount Kody owes, y, in terms of the days, x, renting the car.
ANSWER : y = 33x + 45

6. Given the mapping at the right.
a) Write the ordered pairs the mapping represents.
ANSWER : {(-2, 3), (0, 1), (2, 3), (4, 5)}
b) Write the domain.
d) Does the mapping represent a function? Explain.
ANSWER : {-2, 0, 2, 4}
c) Write the range.
Yes. No member of the domain repeats.
ANSWER : {1, 3, 5}

7. A line passes through the points (-2, 5) and
8) Given f(x) = x2 + x, find…
a) f(8)
ANSWER : 72
b) f(-5)
ANSWER : 20
A line passes through the points (-2, 5) and
(3, -10). Write the equation of the line in the following forms.
a) Point-Slope
ANSWER : y – 5 = -3(x + 2) or y + 10 = -3(x – 3)
b) Slope-Intercept
ANSWER : y = -3x - 1
c) Standard
ANSWER : 3x + y = -1