Unit 4 Functions Question Preview (ID: 34712)


Review Of Unit 4 Functions. TEACHERS: click here for quick copy question ID numbers.

Domain means...
a) X values
b) Y values
c) X and Y values
d) nothing

Range means...
a) X values
b) Y values
c) X and Y values
d) nothing

How do you determine if a list of ordered pairs or a table is a function?
a) Look at the X values if they do repeat then you have a function
b) Look at the X values if they do not repeat then you have a function
c) Look at the Y values if they do not repeat then you have a function
d) Look at the Y values if they do not repeat then you have a function

Given the function and a domain, find the range. f (x) = −6x − 1; D=-2, -1, 0, 5
a) R=10, 5, -1, -31
b) R=11, 6, -1, -31
c) R=11, 5, -2, -31
d) R=11, 5, -1, -31

How do you determine if a graph is a function?
a) Use the vertical line test. The function must only hit at one point.
b) Use the vertical line test. The function must only hit at two point.
c) Use the horizontal line test. The function must only hit at one point.
d) Use the horizontal line test. The function must only hit at one point.

k(x) = -3x – 8 ...find k(5)
a) -23
b) 22
c) 7
d) -8

h(x) = 4 – 3x ...FInd h(-6) =
a) -14
b) -18
c) 22
d) -22

f(x) = 2x + 5...Find f(-9)
a) -13
b) 23
c) 18
d) 20

Give an example of a relation that is not a function.
a) (2, –3), (4, 6), (3, –1), (6, 6), (1, 3)
b) (2, –3), (4, 6), (3, –1), (6, 6), (2, 3)
c) (-2, –3), (4, 6), (3, –1), (6, 6), (2, 3)
d) (9, –3), (4, 6), (3, –1), (6, 6), (2, 3)

Given the function and a domain, find the range f (x) = −7x + 3, D=-12, -4, 3, 20
a) R=(-87, -31, -18, -137)
b) R=(87, 31, -18, -137)
c) R=(100, 131, -118, -37)
d) R=(-87, -31, 18, 137)

Give an example of a relation that is a function.
a) (–3, 5), (–2, 5), (0, 4), (0, 5), (1, 5), (2, 5)
b) (–3, 5), (–1, 5), (1, 6), (1, 5), (2, 5)
c) (–2, 5), (–1, 5), (0, 5), (1, 5), (-2, 5)
d) (–3, 5), (–2, 5), (–1, 5), (0, 5), (1, 5), (2, 5)

If f (x) = −32x+ 1, find...f (0)
a) -1
b) 0
c) 1
d) -32

If f (x) = −4 x− 7, find... f (3)
a) -19
b) 19
c) -8
d) 8

Which coordinate is true in the expression y=5x+2 when x=6?
a) (13,6)
b) (6,3)
c) (3,6)
d) (6,32)

g(x) = x^2 – 4...find g(7)
a) 53
b) 45
c) 49
d) 50

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