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Question

A line parallel to y +2 = 3x and passing through origin is :
Options
A) y + 3x = 0
B) y - 3x = 0
C) both A and B
D ) none of these

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Solution

The equation of the given line is y+2=3x y = 3x - 2 .....1On comparing 1 with y=mx+cThus, m=3 and c=-2Slope of the given line, m = 3Any line parallel to above line 1 will have the same slope.Equation of a line passing through origin0,0 and slope, m=3 is y-0=3x-0 using, y-y1 = mx-x1y=3x or y - 3x = 0

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