Question

Consider 9x-7y=-2
What is the slope of a line parallel to this line?
What is the slope of a line perpendicular to this line?

Answer 1

can you solve the equation for y?

Answer 2

or can you tell me the slope of the line?

Answer 3

@salce08 ?

Answer 4

there is no slope

Answer 5

@zzr0ck3r

Answer 6

solve the equation for y
then
y=mx+b
m is the slope

Answer 7

the gradient for this line is 9/7. the gradient for the line parallel to that line is 9/7 because parallel lines have the same gradient. the gradient of the perpendicular line is the reciprocal of 9/7 which -7/9 because the gradients have to equal -1 if they're perpendicular