Finding equations for points

timer Asked: Jul 3rd, 2014
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Question Description

Find an equation of the line passing through the origin and parallel to the line passing through the points (2,8) and (4,12

Tutor Answer

Alex Z
School: UIUC

1st determine slope ("m"):  (y2-y1)/(x2-x1) = (12-8)/(4-2) = 4/2 = 2; thus m=2

2nd determine the "b" value by using slope from above and point (0,0):  y=mx+b; 0=2*0+b; thus, b=0

3rd write the equation: y=2x

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Thanks, good work

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