Question

Which is the equation of the function graphed?


VHS_ALG_L3_S2_01_16_UTQ4v1.gif


A.
f(x) = |x – 4|

B.
f(x) = |x| + 4

C.
f(x) = |x| – 4

D.
f(x) = |x + 4|

Answer 1

it might be b...? How are you thinking with this problem?

Answer 2

yea its b

Answer 3

How did you guy's get that?

Answer 4

To be able to read of a graph, look at the last digit in the function: it would tell you from which point in the y-axis the function begin. In this example, your graph begins with y=4. Graph is positive ( it goes up, thus no minus sign). The only one that fits is the alternative b

Answer 5

Wouldnt D, Fit to?

Answer 6

@mathslover

Answer 7

I don't think so, because in the function (D), the "4" is part of the function, meaning you can only have one linear equation. Here, you have two: left (minus) and right (positive), meaning that the x is of absolute value. The "4" outside of the graph points to the point whete the x-function begin, that is y=4.

Answer 8

Ok, Thanks!

Answer 9

Do you understand, @blueweek77 ?
Thanks for the medal.