Square Root Functions — Unit test Answers
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21
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For what values of m does the graph of y = mx2 – 5x – 2 have no x-intercepts?
A
m greater-than negative StartFraction 25 Over 8 EndFraction
B
m less-than negative StartFraction 25 Over 8 EndFraction
C
m less-than StartFraction 25 Over 8 EndFraction
D
m greater-than StartFraction 25 Over 8 EndFraction
22
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Which system is equivalent to
A
StartLayout Enlarged left-brace 1st row 5 minus x = 9 x squared 2nd row y = 5 minus x EndLayout
B
StartLayout Enlarged left-brace 1st row y = 9 y squared minus 90 y + 225 2nd row x = y minus 5 EndLayout
C
StartLayout Enlarged left-brace 1st row 5 + x = 9 x squared 2nd row y = 5 + x EndLayout
D
StartLayout Enlarged left-brace 1st row y = 3 x 2nd row x + 3 x = 5 EndLayout
23
Which could be the function graphed below?
A
f (x) = StartRoot x minus 5 EndRoot + 1
B
f (x) = StartRoot x minus 2 EndRoot
C
f (x) = StartRoot x EndRoot
D
f (x ) = StartRoot x + 4 EndRoot
24
For which value of m does the graph of y = 18x2 + mx + 2 have exactly one x-intercept?
A
0B
9C
12D
1625
What are the values of x in the equation x2 – 6x + 9 = 25?
A
x = –2 or x = 8B
x = –1 or x = –11C
x = 1 or x = 11D
x = 2 or x = –826
Which equation represents a graph with a vertex at (1, –6)?
A
y = 3x2 + 6x – 3B
y = 3x2 – 6x – 3C
y = 3x2 – 8x – 1D
y = 3x2 – 3x – 6Did you find these answers helpful?
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