Question

Select the equation in which the graph of the line has a positive slope, and the y-intercept equals -5. 10x – 5y = 40 5x – 10y = –12 5x + y = 50 x – 2y = 10

Answer 1

The equation x-2y=10 fits the requirements. 
To figure this out, I put them all in point-slope intercept form: y=mx+b
x-2y=10
-x      -x
-2y=-x+10
---------------
-2       -2
y=x/2-5
x/2: positive!
-5: correct y-interecpt!