Introduction to Quadratic Functions Answers
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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 + 52
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The graph of f(x) is shown.
A
–2 to –1B
–1.5 to 0.5C
0 to 1D
0.5 to 1.53
Which is f(5) for the function –2x2 + 2x – 3?
A
–107B
–63C
–43D
–374
What is f(−3) for the function f(a)=−2a2−5a+4?
A
−29B
−23C
1D
375
Which function increases at the fastest rate between x = 0 and x = 8?
A
A 2-column table with 5 rows titled Linear Function with the equation f of x = 2 x + 2. The first column is labeled x with entries 0, 2, 4, 6, 8. The second column is labeled f of x with entries 2, 6, 10, 14, 18.
B
A 2-column table with 5 rows titled Exponential Function with the equation f of x = 2 Superscript x Baseline + 2. The first column is labeled x with entries 0, 2, 4, 6, 8. The second column is labeled f of x with entries 3, 6, 18, 66, 258.
C
A 2-column table with 5 rows titled Quadratic Function with the equation f of x = 2 x squared + 2. The first column is labeled x with entries 0, 2, 4, 6, 8. The second column is labeled f of x with entries 2, 10, 34, 74, 130.
D
A 2-column table with 5 rows titled Linear Function with the equation f of x = 3 x + 2. The first column is labeled x with entries 0, 2, 4, 6, 8. The second column is labeled f of x with entries 2, 8, 14, 20, 26.
6
Which represents a quadratic function?
A
f(x) = 2x3 + 2x2 – 4B
f(x) = –7x2 – x + 2C
f(x) = –3x + 2D
f(x) = 0x2 + 3x – 39
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).
10
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 + 7Did you find these answers helpful?
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