Question 52346
Think... when an equation is "stretched", what happens?

To stretch a whole function by a factor of 4 vertically, f(x) -> 4*f(x)
To stretch a whole function by a factor of 7 horizontally, f(x) -> f(x/7)

But since this is an relation, lets solve for x instead of y
{{{y-x^2 = (1/2)x + y}}}
{{{-x^2 = (1/2)x}}}
{{{x = -2x^2}}}
{{{2x^2+x=0}}}
{{{x(2x+1)=0}}}

This is basically the graph of two vertical lines{{{x=0}}} {{{x=-(1/2)}}}

a vertical line stretched 4 times vertically will still be the same
a vertical line stretched 7 times horizontally will still be the same

The stretched relation will still be the same as the original equation.