Question

PLEASE HELP MEDAL TO CORRECT ANSWER WITH EXPLANATION

Answer 1

y= - x -4
5x+5y=20

x+y = -4
5(x+y)=20 (took common)

x+y=-4
x+y=4

we know m1*m2 must be equal to -1

-4 * 4 = -16

the lines are not perpendicular :)

Answer 2

ooohhh so it would be b

Answer 3

it would be c ha

Answer 4

no silly not c , d because neither the product is -1 nor the slopes are equal, sorry was installing updates :)

Answer 5

oh haha it's okay thank you!

Answer 6

welcome ^_^