Download Unit 1 review

Name ___________________________ Date _____________ Hour ________
Algebra 1 Unit 1 Review:
1. Evaluate f(x) = -4x + 7 when x = -5.
2. Find the constant of variation k for the direct variation.
a. 2x = 7y
x
y
1
-7
2
-14
3
-21
3. What type of correlation is found in the graph?
4. Write a function rule for the table.
X
-2
-1
0
1
5. Draw a mapping diagram, table, and graph for the
following relation. Then determine whether the relation
is a function. {(-2, 3), (4, 0), (5, 4) (-2, 3)}
Y
5
7
9
11
b.
6. Graph the function. y = -2x + 5
8. Graph y = 2x
10.
Find the rate of change in the table.
11. Find the slope.
7. Graph the function y = x2 +1
9. Graph y = 3x  1
Time
(Minutes)
5
10
15
20
Temperature
(Celsius)
65
75
85
90
a. (-5, 7), (2, -3)
. (5, 4), (5, -7)
c. (6, 9), (-2, 9)
12. Find the slope in the graph. Find the yintercept. Then write the equation for the line.
13. Give the slope and y-intercept of the lines.
a. y = -2x – 7
b. y = 3x + 3
14. Write an equation with the slope of -4 and y – intercept of 5.
15. Find the x- and y-intercepts of the lines.
a. -2x + 7y = 28
b. 2x – 5y = 20
16. Graph -2x – 4y = 12
17.
Graph y – 3 = -2(x + 5)
18. Tell whether the table is linear, quadratic, or exponential.
a.
x
1
2
3
4
y
2
5
10
17
b.
x
0
1
2
3
y
3
6
12
24