Unit 4 Functions Question Preview (ID: 34712)
Review Of Unit 4 Functions.
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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)
If f (x) = −4 x− 7, find... f (3)
a) -19
b) 19
c) -8
d) 8
If f (x) = −32x+ 1, find...f (0)
a) -1
b) 0
c) 1
d) -32
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)
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) = −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.
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
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
k(x) = -3x – 8 ...find k(5)
a) -23
b) 22
c) 7
d) -8
g(x) = x^2 – 4...find g(7)
a) 53
b) 45
c) 49
d) 50
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