SOLUTION: How do you rearrange the formula to isolate for the indicated variable? question #1: y = mx + b (for m) and question #2: P = 2(l + w) (for w)

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Question 1090081: How do you rearrange the formula to isolate for the indicated variable?
question #1: y = mx + b (for m) and question #2: P = 2(l + w) (for w)
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
question #1:
+y+=+mx+%2B+b (for m) .......add -b to both sides

+y-b+=+mx+%2B+b-b

+y-b+=+mx+...both sides divide by x
+%28y-b%29%2Fx+=+m%28cross%28x%29%29%2Fcross%28x%29+
+%28y-b%29%2Fx+=+m+

and question #2:

P+=+2%28l+%2B+w%29 ...(for+w) ...both sides divide by 2

P%2F2+=+cross%282%29%28l+%2B+w%29%2Fcross%282%29

P%2F2+=+l+%2B+w....add -l to both sides

P%2F2+-l=+l-l+%2B+w

P%2F2+-l=w