Question

The graphs of equation 3x + 4y =-2 and 3x +2y=-4 are :
a.) Same line
b.) Two intersecting lines which are not parallel
c.) two perpendicular lines

Answer 1

the answer's B. because the slopes are not parallel nor perpendicular

Answer 2

can you show how you found that?

Answer 3

i isolated y for each equation so..
y=-3x/4-1/2 and y=-3x/2-2
and the slopes are -3/4 and -3/2
to be perpendicular you have to flip them and add a negative but this isn't the case and to be parallel the slopes need to equal each other but because they are different they are not parallel

Answer 4

Oh wow now it all seems so simple. Thank you.

Answer 5

np:)

Answer 6

B