Finding equations for points

User Generated

FVZBAN2014

Mathematics

Question Description

Find an equation of the line that passes through the points (1, 4) and ( -7, -4)

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Explanation & Answer

1st determine slope ("m"):  (y2-y1)/(x2-x1) = (-4-4)/(-7-1) = -8/-8 = 1; thus m=1

2nd determine the "b" value by using slope from above and point (1,4):  y=mx+b; 4=1*1+b; thus, b=3

3rd write the equation: y=x+3


Nyrk M (997)
Purdue University

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