Question

Determine whether the graphs of y =-9x+12 and y=1/3x-12 are parallel, perpendicular, coincident

Answer 1

Answer: "None of these"

Explanation:

Answer 2

1) graphs y = -9x + 12 and y = 1/3x - 12 are not coincident.

2) The graphs are not parallel, because the angular coefficients are not equal

3) The condition of perpendicularity:

`k_1\cdot k_2=-1`, where
`k_1=-9;~~~ k_2=(1)/(3)`

`(-9)\cdot(1)/(3)=-3\\e -1` - not perpendicular