Question

Square EFGH stretches vertically by a factor of 2.5 to create square E′F′G′H′. The square stretches with respect to the x-axis. If point H is located at (-2, 0), what are the coordinates of H′ ?. . A) (-5, 0). B) (-2, 0). C) (0.5, 0). D) (-2, 2.5).

Answer 1

A vertical stretching is the stretching of the graph away from the x-axis. 
It means you simply need to multiply the scale factor with the x-values.
If point H is located at (-2, 0),and the scale factor is 2,then the stretch would be (-2*2.5,0)
Hence,the new point will be:
A.(-5,0).

Answer 2

the answer would be  D.(-2, 2.5)