Question

Please help me! I don't get this ! Can someone explain how to do it? Thanks!
Write the equation of the line that is parallel to the line y = −3x + 12 and passes through the point (−1, 6).

y = 1/3x + 7
y = −3x + 3
y = 1/3x + 3
y = −3x + 7

Answer 1

the line must be parallel with y = −3x + 12 .Two lines are parallel when their slopes are the same so the slope of the line we are looking for must be -3.
when we got the slope and a point we use this formula: y-y1=slope(x-x1)
so y-6=-3(x+1)
y=-3x+3

Answer 2

Get it Mimi?

Answer 3

I think... does the same thing go for perpendicular lines?

Answer 4

no the slope of the line when it is perpendicular is -1/slope of the line given then it's the same :) :)

Answer 5

Okay, thanks a bunch! :)

Answer 6

yw :)