SOLUTION: write equation,in slop-intercept from,(3,4)and(5,8)

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Question 233545: write equation,in slop-intercept from,(3,4)and(5,8)
Answer by eggsarecool(46) About Me  (Show Source):
You can put this solution on YOUR website!
Ok so first we need the slope. You compute this using m=%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29 Where m is your slope.
So you have (3,4) and (5,8)
Giving us x%5B1%5D=3 y%5B1%5D=4 x%5B2%5D=5 y%5B2%5D=8
So m=%288-4%29%2F%285-3%29=4%2F2=2
Now to write the the equation you can pick (3,4) or (5,8)
So it will look like y-y%5B1%5D=m%28x-x%5B1%5D%29 or y-y%5B2%5D=m%28x-x%5B2%5D%29
I will use the first point (3,4).
So now we have y-4=2%28x-3%29
Next multiply out the two on the right hand side. y-4=2x-6
Now add 4 to both sides.
This gives you your final answer of y=2x-2