Introduction to Quadratic Functions Answers
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Which graph shows a negative rate of change for the interval 0 to 2 on the x-axis?
A
On a coordinate plane, a parabola opens up. It goes through (negative 6, 3), has a vertex of (negative 1.5 negative 3.75), and goes through (3.2, 4).
B
On a coordinate plane, a parabola opens up. It goes through (negative 5.5, 4), has a vertex of (negative 1, negative 3.2), and goes through (3.5, 4).
C
On a coordinate plane, a parabola opens up. It goes through (negative 1, 4), has a vertex of (2.5, 0.25), and goes through (5.8, 4).
D
On a coordinate plane, a parabola opens up. It goes through (negative 3.4, 4), has a vertex of (1.5, negative 3.75), and goes through (6, 3).
3
Which is f(5) for the function –2x2 + 2x – 3?
A
–107B
–63C
–43D
–375
Which graph represents a quadratic function with a vertex at (0, 0)?
A
On a coordinate plane, a parabola opens up. It goes through (negative 5, 6), has a vertex of (0, 1), and goes through (5, 6).
B
On a coordinate plane, a parabola opens up. It goes through (negative 6, 6), has a vertex of (0, negative 1), and goes through (6, 6).
C
On a coordinate plane, a parabola opens up. It goes through (negative 5, 6), has a vertex of (0, 0), and goes through (5, 6).
D
On a coordinate plane, a parabola opens up. It goes through (negative 2.5, 6), has a vertex of (3, 0), and goes through (7.5, 4).
6
Which represents a quadratic function?
A
f(x) = −8x3 − 16x2 − 4xB
f (x) = x 2 + 2x − 5
C
f(x) = + 1
D
f(x) = 0x2 − 9x + 77
What is f(−3) for the function f(a)=−2a2−5a+4?
A
−29B
−23C
1D
378
Which equation represents a quadratic function with a leading coefficient of 2 and a constant term of –3?
A
f(x) = 2x3 – 3B
f(x) = –3x2 – 3x + 2C
f(x) = –3x3 + 2D
f(x) = 2x2 + 3x – 3
10
A 2-column table with 5 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f of x with entries 21, 10, 5, 6, 13.
A
f(x) = 3x2 + 2x – 5B
f(x) = 3x2 – 2x + 5C
f(x) = 2x2 + 3x – 5D
f(x) = 2x2 – 2x + 5Did you find these answers helpful?
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