Question

Determine whether the graphs of y = –7x + 1 and –y = 7x –1 are parallel, perpendicular, coincident, or none of these.

Answer 1

Give an explanation not just an answer please

Answer 2

first change second equation to ' y = ' by multiplying each term by -1

Answer 3

then you can compare equations directly

Answer 4

Parallel -> same slope
Perpendicular -> negative reciprocal ( -1/x)

Answer 5

can you do what i suggested?

Answer 6

Yes

Answer 7

Sorry i was afk

Answer 8

-1 * ( -y = 7x - 1)
gives

y = 7x + 1
which is the same as the first equation

Answer 9

@cwrw238 I got perpendicular

Answer 10

sorry
i got it wrong

its y = -7x + 1 - same as first

so the lines are co-incident

Answer 11

So coincident?