Question

Select the equation corresponding to the green line in this diagram:

A. y=6x

B. y= -6x

C. y= -6​

Answer 1

C. y = -6

Explanation:

y = -6 [or f(x)=-6] is graphed as a horizontal line that goes through the y-axis one time at (0,-6). It looks odd, but essentially this function is saying that for any and all inputs, the output will be -6.

For future reference, if ever you have a function where x = (some number) then the graph will be a vertical line that crosses the x-axis once at some point.