in y = mx + b form, the slope is in the m position and the y int is in the b position
y = mx + b
slope(m) = -1/5
y int (b) = 5
sub
equation is : y = -1/5x + 5....but we need it in general form Ax + By + C = 0
y = -1/5x + 5...add 1/5x to both sides
1/5x + y = 5 ....multiply everything by 5
x + 5y = 25...subtract 25 from both sides
x + 5y - 25 = 0 <== general form
