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College Algebra - Chp.3
Test Description: Practice
Instructions: Answer all questions to get your test result.
1) Which formula should you use to maximize a function?
A
y = mx + b
B
y = a(x - h)^2 + k
C
x = -b/2a
D
x = -a/2b
2) Name the vertex: y = 2(x - 7)^2 - 5
A
(7, 5)
B
(2, -5)
C
(-7, -5)
D
(7, -5)
3) Name the axis of symmetry: y = -3(x + 6)^2 + 8
A
x = 8
B
x = -3
C
x = 6
D
x = -6
4) Which of the following is NOT a property of a polynomial graph.
A
continuous
B
smooth
C
sharp edges
D
curvy
5) Find the y-intercept: f(x) = 3/(x - 2)
A
(0, 3.2)
B
(0, 0)
C
(0, 2/3)
D
(0, -1.5)
6) Find the x-intercept: f(x) = 3/(x - 2)
A
(0, -1.5)
B
none
C
(0, 3)
D
(0, 0)
7) Name the vertical asymptote: f(x) = 3/(x - 2)
A
x = 2
B
x = -2
C
y = -2
D
x = 3
8) Name the horizontal asymptote: f(x) = 3/(x - 2)
A
y = 0
B
y = 3/2
C
none
D
y = 3
9) Name the possible rational zeros: x^3 - 2x^2 + 3x + 8
A
+/- 2, 4
B
+/- 1, 2, 4, 8
C
+/- 1, 8
D
+/- 1, 2, 3, 4, 8
10) Find the vertex: f(x) = 2x^2 + 8x - 9
A
(8, 9)
B
(-2, -17)
C
(2, 13)
D
(-2, 22)
*select an answer for all questions
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