Solve the system using substitutions:

x has a value of 1. Use this value to find the value of y.

y has a value of 1.
x=1
y=1
11/42
The way I got it is because I took 1/6 minus 3/7 to get the answer of f=11/42
Answer:
y-intercept is y= -4.5+28 slope is 4.5
Step-by-step explanation:
18x+4y=112
-18x -18x
4y=112-18x
-----------------
4
y= -4.5x+28
I think its x^2(18x^2 -9+4x) sorry if I’m wrong