Question

What is the relationship between the lines determined by the following two equations?

15x – 3y = –12
y = 5x + 7

A.
parallel

B.
perpendicular

C.
they are the same line

D.
neither parallel nor perpendicular

Answer 1

parallel bcoz their slopes are same

Answer 2

since the second equation is already in this y = mx + b,
y = 5x + 7 we already know that the slope is 5
15x-3y=-12
Change to 3y=15x-12 in slope form
so divide 15x-12 by 3
you’ll get y= 15x/3-12/3
then simplify,, you’ll get y=5x-4
the slope is also 5

so both equations have the same slope

Answer 3

First one is easier to understand :P