We ahve to solve for y in the equation:
- 2 x - 7 y = 4
We add 7 y to both sides:
- 2 x = 4 + 7 y
now subtract 4 from both sides:
- 2 x - 4 = 7 y
divide everything on the left and everything on the right by 7 in order to isolate the "y" completely:
- 2 x / 7 - 4 / 7 = y
y = -(2/7) x - (4/7)
where "- (2/7) " is the slope
and
"- (4/7)" is the y-intercept
