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y= -x +2 and 3x+3y=6 parallel or perpindictular?

0 votes

parallel, perp. or neither? thanks.

parallel-lines
perpendicular-lines

asked Mar 12, 2014 in ALGEBRA 2 by mathgirl Apprentice

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1 Answer

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Slope intercept form of a line y = mx + b

First equation y = - x + 2

Slope of first line = -1

Second equation 3x + 3y = 6

Subtract 3x from each side.

3y = -3x + 6

Divide each side by 3.

y = -x + 2

Slope of second line = -1.

Slope of two lines are equal.

Given lines are parallel.

answered Mar 12, 2014 by david Expert

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