Function Inverses Answers
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The function h(x) is given below.h(x) = {(3, –5), (5, –7), (6, –9), (10, –12), (12, –16)}Which of the following gives h–1(x)?
A
{(3, 5), (5, 7), (6, 9), (10, 12), (12, 16)}B
{(–5, 3), (–7, 5), (–9, 6), (–12, 10), (–16, 12)}C
{(3, –5), (5, –7), (6, –9), (10, –12), (12, –16)}D
{(5, 3), (7, 5), (9, 6), (12, 10), (16, 12)}3
Which function has an inverse that is also a function?
A
{(–4, 3), (–2, 7), (–1, 0), (4, –3), (11, –7)}B
{(–4, 6), (–2, 2), (–1, 6), (4, 2), (11, 2)}C
{(–4, 5), (–2, 9), (–1, 8), (4, 8), (11, 4)}D
{(–4, 4), (–2, –1), (–1, 0), (4, 1), (11, 1)}4
Which graph shows a function whose inverse is also a function?
A
On a coordinate plane, 2 curves are shown. f (x) is a curve that starts at (0, 0) and opens down and to the right in quadrant 1. The curve goes through (4, 2). The inverse of f (x) starts at (0, 0) and curves up sharply and opens to the left in quadrant 1. The curve goes through (2, 4).
B
On a coordinate plane, 2 parabolas are shown. f (x) opens up and goes through (negative 2, 5), has a vertex at (0, negative 2), and goes through (2, 5). The inverse of f (x) opens right and goes through (5, 2), has a vertex at (negative 2, 0), and goes through (5, negative 2).
C
On a coordinate plane, two v-shaped graphs are shown. f (x) opens down and goes through (0, negative 3), has a vertex at (1, 3), and goes through (2, negative 3). The inverse of f (x) opens to the left and goes through (negative 3, 2), has a vertex at (3, 1), and goes through (negative 3, 0).
D
On a coordinate plane, two curved graphs are shown. f (x) sharply increases from (negative 1, negative 4) to (0, 2) and then changes directions and curves down to (1, 1). At (1, 1) the curve changes directions and curves sharply upwards. The inverse of f (x) goes through (negative 4, negative 1) and gradually curves up to (2, 0). At (2, 0) the curve changes directions sharply and goes toward (1, 1). At (1, 1), the curve again sharply changes directions and goes toward (3, 1).
5
If and , which expression could be used to verify that is the inverse of ?
A
one-third (one-third x)
B
Option
C
Option
D
Option
6
Which function is the inverse of ?
A
f Superscript negative 1 Baseline (x) = one-half x minus three-halves
B
Option
C
Option
D
Option
7
Which function has an inverse that is a function?
A
b(x) = x2 + 3B
d(x) = –9C
m(x) = –7xD
p(x) = |x|8
If and are inverse functions of each other and , what is ?
A
Option
B
Option
C
Option
D
Option
9
Which statement could be used to explain why the function h(x) = x3 has an inverse relation that is also a function?
A
The graph of h(x) passes the vertical line test.B
The graph of the inverse of h(x) is a vertical line.C
The graph of the inverse of h(x) passes the horizontal line test.D
The graph of h(x) passes the horizontal line test.10
If and , which expression could be used to verify g(x) is the inverse of f(x)?
A
one-fifth (one-fifth x + 5) + 5
B
One-fifth (5 x minus 25) + 5
C
StartFraction 1 Over (one-fifth x + 5) EndFraction
D
5 (one-fifth x + 5) + 5
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