PRECALCULUS PRETEST
SHOW ALL WORK. CIRCLE YOUR ANSWERS. WRITE YOUR EXACT ANSWERS UNLESS OTHERWISE
INSTRUCTED.
1. Solve for x.
a. ( x 7)( x 1) ( x 1) 2 b. 1 Ax B 0
3
c. x6 x d. 5
x2
2. Given 2 x 3 y 6
a. Graph the equation. b. Determine the slope and y-intercept.
c. Select two points on the line and use them to confirm, algebraically, that the slope you calculated
from part (b) is correct.
3. Answer these questions about
the function g that is graphed at the right.
a. g(4) = _____ g(x)
Graph of function g
7
b. If g(a) = 3, then a = _____ 6
5
c. The zero of function g is ____ 4
3
2
1
0
-6 -4 -2 0 2 4 6
-1
-2
x
1
4. Simplify without the aid of a calculator:
a. 5 6 24 b. 900 c.
7 49 120
4
5. Simplify and write with positive exponents: 2x
5 x3
2 4 3
6. Solve by Factoring:
a. 6m2 26m 20 b. 3x3 27 x 0
7. Given g ( x) x 2 9 :
a. Find g 4 b. g x 5
c. g x 5
8. Graph the quadratic function f x x2 8x 7 and find the vertex.
Number your axes
2
Answers to MA 180/PRECALCULUS PRETEST
11 1 B 7
1. a. c. e. 3 f.
3 A 5
2
2. b. m b=2
3
3. a. 6 b. 0 c. 4
4. a. 60 b. 30i c. –5, +3/2
5
5.
8x 6
6. a. m 2 , 5 b. x 0, 3
3
x +14 f. x2 10 x 16
2
7. b. -7 d.
8. vertex: (4, -9)
3