It looks like a rotation of 270 degrees counter-clockwise and a dilation (enlargement) of 2 times.
Hope this helps answer your question!
The answer will be -28. Hope it helps
Solve it by substitution. First let's rewrite the first equation (3x+4y=16) so we have y = something, then we'll substitue that in to the other equation.
3x+4y=16
4y=-3x+16
y=-3/4x+4
Now we can substitute this into the other equation.
