SOLUTION: my question is: write the equation of a line passing through the points (-3,7) and (2,4). when i did the problem i got y=3x+30/4 is that right? thanks for helping me!

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: my question is: write the equation of a line passing through the points (-3,7) and (2,4). when i did the problem i got y=3x+30/4 is that right? thanks for helping me!      Log On


   

Question 5458: my question is:
write the equation of a line passing through the points (-3,7) and (2,4).
when i did the problem i got y=3x+30/4
is that right?
thanks for helping me!
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
I think you missed this one.

First find the slope, which is m= %28y%5B2%5D+-+y%5B1%5D%29%2F%28x%5B2%5D+-+x%5B1%5D%29+
m = +%284-7%29+%2F%282-%28-3%29%29=+-3%2F5
y-7=+%28-3%2F5%29+%2A+%28x%2B3%29
y+-+7+=+%28-3%2F5%29%2Ax+-3%2F5%2A3
y+-+7+=%28-3%2F5%29x+-+9%2F5
y+=+%28-3%2F5%29+x+-9%2F5+%2B+7
y+=+%28-3%2F5%29x+%2B+26%2F5

Check by substituting x = 2, and see if you get y = 4! It works!!

R^2 at SCC