Asked by Ty
I can't get this slope stuff. I'm trying to find the equation for a line. It has a slope of 1/2 and passes through (8,3). Using the equation y=mx+b, I know that it should be y=1/2x+b so y=1/2(8)+b. Now, I don't know what to do. Is the 3 in the b or y spot? It says y=____ I'm so confused...thanks for help.
Answers
Answered by
drwls
You are correct that y = (x/2) + b
Since y = 3 at x = 8, you also know that
3 = (8/2) + b = 4 + b.
Therefore b = -1.
y = (x/2) -1
(To answer your question, the 3 goes in the "y" spot when using the (8,3) point and the equation to compute b.)
Since y = 3 at x = 8, you also know that
3 = (8/2) + b = 4 + b.
Therefore b = -1.
y = (x/2) -1
(To answer your question, the 3 goes in the "y" spot when using the (8,3) point and the equation to compute b.)
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