How do you find the slope given 4x-5y=20?
the equation of a line in the form y = mx + c , where m , represents the gradient (slope) and c , the y-intercept , allows m and c to be extracted quite 'easily'.
rearrange 4x -5y = 20 into the form y = mx + c
hence 5y = 4x - 20
divide both sides by 5
# y = 4/5 x - 4 rArr m = 4/5 #