Aphoto is printed on an 11-inch by 13-inch piece of paper. the photo covers 80 square inches and has a uniform border. what is the width of the border?

Let
w--------> width of the border

we know that
(11-2w)*(13-2w)=80--------> 11*13-22w-26w+4w²=80
143-48w+4w²-80=0
4w²-48w +63=0

using a graph tool------> to resolve the second order equation
see the attached figure

the solution are
w1=1.5
w2-10.5--------> is not solution

the answer is
the width of the border is w=1.5 in

I’m going to infer you said parallel.solve for yy= -1/2x+7/4lines that are parallel have the same slope, different y intercept.so we know m is -1/2then from there solve for y intercept.