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mestny [16]
3 years ago
15

Complete the equation of the line through (2,1) and (5,-8) WORTH 20 POINTS

Mathematics
2 answers:
ale4655 [162]3 years ago
7 0

Answer:


First we calculate the slope (which is called "m".


Slope = m = (Y2 -Y1) ÷ (X2 -X1)


m = (-8 -1) / (5 -2) = -9 / 3 = -3


We next fill in this equation: b = y -mx


We know m = -3 and we can choose a point (2, 1) to calculate "b"


b = 1 --3 * 2 b = 7


Putting this into y = mx +b


y = -3x +7


s2008m [1.1K]3 years ago
6 0
This is pretty much what it is- when you do it try to get your lines straighter
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