D
uses the the formula y=mx+b and m is the slope. b is the y intercept.
Is this what you mean this is what i understood.
X-4=10;4x+1=57
First equation solve for x.
X-4=10
Add 4 both sides
X=10+4
X=14
Second equation substitute your x answer into second equation to make both sides equal.
4x+1=57
4(14)+1=57
56+1=57
57=57
19x - 22 is you combine like terms!
We could write the fractions as decimals.

The answer is
.004 or 4/1000.