The point A(-3,5) and the point B(1,-15) lie on the line L. Find the equation of the line L.
1 answer:
(-3,5)(1,-15) slope = (-15 - 5) / (1 - (-3) = -20/4 = -5 y = mx + b slope(m) = -5 use either of ur points...(-3,5)...x = -3 and y = 5 now we sub and find b, the y int 5 = -5(-3) + b 5 = 15 + b 5 - 15 = b -10 = b so ur equation is : y = -5x - 10....or 5x + y = -10
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