Answer:
c. -1/2x + y = -10
Step-by-step explanation:
[tex] - \frac{1}{2} x + y = - 10 \\ y = \frac{1}{2} x - 10[/tex]
Changing the order of the equation, you can verify the coefficient of x is the same when y is isolated.
In slope-intercept form, the coefficient of x, or the m in y=mx+b, is the slope or gradient.