help me please help

Question

Look at each equation. Does the equation represent a line with slope 

m = 5,containing the point (3, 8)?Select Yes or No for each equation.

 

Yes or No 5x − y = 7

Yes or No x + 8y = 5

Yes or No 10x − 2y = 14

Answer 1

5x - y = 7 → - y = -5x + 7 → y = 5x - 7

8 = 5(3) - 7

8 = 15 - 7

8 = 8

This equation has the slope of m = 5, containing the point (3, 8).

x + 8y = 5 → 8y = -x + 5 → y = (-1/8)x - (5/8)

8 = (-1/8)(3) - (5/8)

8 = (-3/8) - (5/8)

8 ≠ -1

This equation has the slope of m = -1/8, doesn't contain the point (3, 8).

10x - 2y = 14 → -2y = -10x + 14 → y = 5x - 7

8 = 5(3) - 7

8 = 15 - 7

8 = 8

This equation has the slope of m = 5, containing the point (3, 8).