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Choose the definition for the function.

A.
C.
√4x - if x < 0
3
2x + 2
if x ≥ 0
2x - 2
--4
if x ≤ 0
if x > 0
B.
D.
2x + 2
x + 4
x + 4
2x + 2
if x ≤ 0
if x > 0
if x ≤ 0
if x > 0

Choose the definition for the function. A. C. √4x - if x < 0 3 2x + 2 if x ≥ 0 2x-example-1

1 Answer

3 votes

Answer:

B

Explanation:

we need to look at the y-intercept (the y value when x=0).

we need equating with +2 and +4 at the end.

that eliminates A and C, leaving B and D as potential right answer.

but then we see that the y-intercept "+2" must be in an equation for x <= 0, because that line with +2 intercept only covers negative x.

so, B is correct.

User Nitgeek
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