What is the slope of the line whose equation is 2x−4y=10 ?

solve for y

2x−4y=10  

-2x       -2x      subtract -2x from both sides

-4y = -2x +10

-4            -4    Divide both sides by -4 (coefficient on y)

y = -2/-4x  + 10/-4

y = 1/2x - 5/2

the slope is the number on the x (coefficient)

and its 1/2

i think the amount would be $140.62