Unit Test Answers
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21
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What number should be added to both sides of the equation to complete the square? x2 – 10x = 7
Answer not available
22
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Which is the graph of f(x) = x2 – 2x + 3?
A
On a coordinate plane, a parabola opens up. It goes through (0, 3), has a vertex at (1, 2), and goes through (2, 3).
B
On a coordinate plane, a parabola opens up. It goes through (negative 2, 3), has a vertex at (negative 1, 2), and goes through (0, 3).
C
On a coordinate plane, a parabola opens up. It goes through (0, 3), has a vertex at (2, negative 1), and goes through (4, 3).
D
On a coordinate plane, a parabola opens up. It goes through (negative 4, 3), has a vertex at (negative 2, negative 1), and goes through (0, 3).
23
Which point is an x-intercept of the quadratic functionf(x) = (x – 8)(x + 9)?
A
(0,8)B
(0,–8)C
(9,0)D
(–9,0)24
What is the y-intercept of the quadratic functionf(x) = (x – 6)(x – 2)?
A
(0,–6)B
(0,12)C
(–8,0)D
(2,0)25
On a coordinate plane, a parabola opens up. It goes through (negative 6, 0), has a vertex at (negative 2, negative 16), has a y-intercept at (0, negative 12), and goes through (2, 0).
A
(–6, 0), (2,0)B
(–2, –16), (0, –12)C
(–6, 0), (–2, –16), (2, 0)D
(0, –12), (–6, 0), (2, 0)Did you find these answers helpful?
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