Question

Which pair of equations, when graphed, has lines that are perpendicular?

5x - 8y = 9
12x - 5y = 7

2y = -3x +5
2x - 3y =4

y = 2x -7
x +3y =3

3x + 6y = 8
y = 3x - 8

Answer 1

@jim_thompson5910

Answer 2

a line in standard form is

Ax + By = C

the perpendicular line will be

Bx - Ay = C

so the coefficients of x and y are reversed and the sign between them also changes.

hope it helps

Answer 3

so B?