Question 495416: passing through (9,12) and (7,2)
write the equation of each line in slope intercept form.
Answer by nebiyou(1)   (Show Source):
You can put this solution on YOUR website! y=mx+b......linear equation
slope=m=change in y/change in x but y1=12,y2=2 & x1=9,x2=7
m=2-12/7-9=-10/-2=5 ,then y=5x+b
lets take one of (9,12) to find b substitute 9 to x & 12 to y
we find 12=5(9)+b,12=45+b then b=-33
therefore y=5x-33
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