Verified answer

13 = 20x – 5y

5y = 20x - 13

y = 4x - 13/5

slope is m = 4 answer//

5y = 20x - 13

y = 4x - 13/5

Slope , m = 4

13 = 20x - 5y --> add 5y to each side

5y + 13 = 20x --> subtract 13 from each side

5y = 20x - 13 --> divide every term by 5

y = 4x - 13/5

slope = 4