Let's rewrite the equation with x and y on the left side of the equal sign. 5x-4y=8 --------(1) 3x-3y=3---------(2) Divide equation (2) by 3, x - y= 1 now we have, 5x-4y = 8 --------(1) x - y = 1 ---------(2) To eliminate x, multiply equation (2) by 5. This makes both the coefficients of x to be 5. Subtract the second equation from the first equation. 5x - 4y = 8 (2) * 5 5x - 5y = 5 (-) (+) (-) ---------------- 0x +y =3 Therefore, y=3 Substitute the value of y, in any one of the two equations. Let's substitute y in the second equation. x-3=1 x=4 x=4 and y=3
1st Avenue would be more difficult because it’s rise and run is for every one foot forward it is 3 feet up. Meanwhile avenue 16th would start at (3,1) and the rise and run would be for every 3 feet it would go up 1 foot.
