SOLUTION: how do you solve the y intercept using these points (3,4)and (-5,-2)

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Question 314270: how do you solve the y intercept using these points (3,4)and (-5,-2)
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
Y=mX+b m=slope & b=the Y intercept.
(3,4)and (-5,-2)
Slope=(Y2-Y1)/(X2-X1)=(-2-4)/(-5-3)=-6/-8=3/4 ans. for the slope (m).
4=3/4*3+b
4=9/4+b
b=4-9/4
b=16/4-9/4
b=7/4 ans. for the Y intercept.
Thus the line formula is:
Y=3X/4+7/4
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+3x%2F4+%2B7%2F4%29+ (graph 300x200 pixels, x from -6 to 5, y from -10 to 3x/4 +7/4)