What happens to the y-intercept of y = x when the function changes to y = x + 6?

Select answer A The y-intercept does not change.
Select answer B The y-intercept changes from 0 to 6.
Select answer C The y-intercept changes to the x-intercept.
Select answer D The y-intercept changes from 0 to -6.

Question

What happens to the y-intercept of y = x when the function changes to y = x + 6?

Select answer A 	The y-intercept does not change.
Select answer B 	The y-intercept changes from 0 to 6.
Select answer C 	The y-intercept changes to the x-intercept.
Select answer D 	The y-intercept changes from 0 to -6.

anonymous · Answer

B, because in the first one it is a line going through (0,0), (1,1), etc.  The second equation's y-intercept is 6, with the slope of 1 so answer is B.