Download 10-28 CA 2 Review Algebra

Algebra
Name______________________________
Date________________Period__________
CA 2 Test Review
1. Which of the following represent a direct variation?
A. y = 1/2x + 5
B. x = 3y
C. 3x +5y = 0
D. y = x/12
D. y = 8/x
E. y = x – 2
F. 3y = 2x + 5
G. 3 = xy
Use the following equation for questions (A – G)
4x + 8y = 40
A. When y = 0, x = ________
B. When x = 0, y = ________
C. What is the x-intercept? ________
D. What is the y-intercept (b)? _____
E. Graph the equation.
F. What is the rate of change (slope, m)? _________
G. Write the equation in y = mx + b (slope-intercept) form.
9.
Which of the equations below is equivalent to; 4 x  2y  6 ?
A.
y  4x  6
B.
1
y   x 6
2
C.
y   2x  3
D.
y  2x  3
10. What is the slope of the line represented by the equation 3 x  5 y  15 ?
slope: _________
11. Find the slope of an equation given the following two points. (-4, 7) (-6, -4)
12. Write an equation that is parallel to 8x + 3y = 7 and passes through point (-4, -8)
15. Which of the following equations is represented by the graph below?
Justify/Explain our answer.
A.
2 x  3 y  12
B.
2 x  3 y  12
C.
3 x  2y  12
D.
3 x  2y  12
19
..
20
.
21
..
..
..
Solve
15. 3(x – 3) – 8(5/2x – 5) = 18
16
-12m – 15 = 45
17. Which set of points represents a linear function?
A.
B.
C.
D
(0, 0)
(0, 0)
(0, 0)
(0, 0)
(1, 1)
(1, 1)
(1, 3)
(1, -2)
(2, 4) (3, 9)
(2, 8) (3, 27)
(2, 6) (3, 9)
(2, -8) (3, -18)