What's the slope of the line expressed in the equation -4x + 5y= 15? Please explain how to do it

A) -4/5
B) 3
C) 4/5
D) -3

Please don't just throw the answer. explain it to me because I'm going to have a test next week and I want to practice doing more of these exorcises. If you can, please give me some of these type of exercises.

You must rewrite it using algebratic manipulation to get it in the form y = mx+ b, where m = slope.

-4x + 5y = 15
5y= 4x + 15
y = (4/5)x + 15/5
y = (4/5)x + 3

here m = 4/5 so 4/5 is the slope (answer is C)

-4x + 5y = 15

5y = 4x + 15 (take the 4x over)

y = 4x/5 + 15/5 = (4/5)x + 3

y = mx + c where m is the slope, so slope = 4/5

Try -3x - 2y = 17

2x + y = 1

7y - 2 = 3x

the slope is the coefficient of x when the equation is solved for y

y = 4/5 x + 3

so slope is 4/5