SOLUTION: Find the y intercept of the line through A(1, 2) and B(-3, -4)?

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Question 252224: Find the y intercept of the line through A(1, 2) and B(-3, -4)?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
First we find the slope.
Slope=(y2-y1/(x2-x1)=(-4-2)/(-3-1)=-6/-4=1.5.
Y=mX+b
2=1.5*1+b
2=1.5=b
b=2-1.5
b=.5 ans. for the Y intercept.
Y=1.5X+.5
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+1.5x+%2B.5%29+ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, 1.5x +.5).