Question

What kind of transformation converts the graph of f(x)=
–9|x|+4 into the graph of g(x)=–|x|+4?
vertical stretch
horizontal stretch
horizontal shrink
vertical shrink
reflection across the y-axis
reflection across the x-axis

Answer 1

horizontal stretch

Answer 2

Vertical shrink — by a factor of 1/9 (distances from the line y = 4 are reduced to 1/9 of their original values). The coefficient changes from −9 to −1.