vanessacox45 vanessacox45

14-11-2018
Mathematics

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Find the equation of a line that is parallel to y=2x+3 and passes through (-1,-1)
A. Y=2x+1
B. Y=2x+3
C. Y=4x+3
D. Y=4x+5

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wegnerkolmp2741o wegnerkolmp2741o

14-11-2018

parallel lines have the same slope

y = 2x+3

slope is 2

m=2 on the parallel line

point slope form of a line

y-y1 =m(x-x1)

y--1 = 2(x--1)

y+1 = 2(x+1)

distribute

y+1 = 2x+2

subtract 1 from each side

y = 2x+1

Choice A

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