Question

I need toIs the following pair of lines parallel or perpendicular? Prove your answer.

2y – x = 2

y + 2x = 4




can you explain how to break this down ...

Answer 1

you need to get it into slope intercept form--y=mx+b
(m being the slope) to figure out whether they are parallel (having equal slopes) or perpendicular (slopes are negative reciprocals)

2y-x=2
2y=x+2
y=1/2x+1
slope=1/2

y+2x=4
y=-2x+4
slope=-2


-2 and 1/2 are negative reciprocals making these two line perpendicular

Answer 2

Thank you I did not see the answer. Thank you so much