71.1k views
3 votes
Solve for x.

Y=mx + b
Answer choices:
X=ym-b
X=ym+b
X=y/m+b
X=y-b/m

2 Answers

6 votes
X= y/m - b/m, because you multiple the whole equation by 1/m, getting y/m=x+b/m, and you subtract b/m from both sides, getting X=y/m-b/m
User Sybear
by
8.2k points
6 votes

y=mx+b\\y-b=mx+b-b\\y-b=mx\\\frac{y-b}m=\frac{mx}m\\\\\boxed{\frac{y-b}m=x}
User Mix Master Mike
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8.3k points