kathylmorganp3psrs kathylmorganp3psrs

18-11-2018
Mathematics

contestada

Tell whether the lines for each pair of equations are parallel, perpendicular, or neither.
y=-2x+4
-5x+10y=5
A:Parallel
B:Perpendicular
C: Neither

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wegnerkolmp2741o wegnerkolmp2741o

18-11-2018

y=-2x+4

the slope is -2

-5x+10y=5

solve for y

add 5x to each side

10 y = 5x+5

divide by 10

y = 1/2 x +1/2

the slope is 1/2

take the negative reciprocal of -2

- (1/-2) = 1/2

The two lines are perpendicular

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