The figure shows the graph of two perpendicular lines. Which of the following pairs of equ...

The figure shows the graph of two perpendicular lines. Which of the following pairs of equations might have such a graph?

(a) y−2x = 2

y + 2x = −1

(b) y−2x = 0

2y + x = 0

(c) 2y−x = 2

2y + x =−2

(d) y − 2x = 2

x + 2y = −1

(e) 2x + y = −2

2y + x = −2