Math

Write an equation for the line that is parallel to the given line and passes through the given point. y=2x+4; (3,8)

A. y = 2x + 2
B. y = 2x + 6
C. y = -2x + 6
D. y = -1/2x + 2**

Am I correct?

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  1. I'm sorry, but the answer is not C or D, because a parallel line would have the same slope, which is 2. You are probably thinking of a perpendicular line, which would have a slope of -1/2. Try A or B.Hopefully you get it!

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  2. Slope(m) = 2, P1(3,8), P2(x,y).
    m = (y-8)/(x-3)
    2 = (y-8)/(x-3)
    Cross multiply:
    2(x-3) = (y-8)
    2x-6 = y-8
    Eq: Y = 2x + 2.

    Check: Y = 2*3 + 2 = 8.

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