Answer:
-1/2
Step-by-step explanation:
Rearranging this equation to slope-intercept form, we see the slope (x-coefficient) is 2:
2x = 7 + y . . . . . add y
y = 2x -7 . . . . . . subtract 7
The slope of the perpendicular line is the opposite of the reciprocal of this:
-1/2 = slope of perpendicular
