x = 5 y = 2 4x - 3y = ? 4(5) - 3(2) = ? 20 - 6 = 14
x + 3y = 2 2x - 3y = 22 Add the two equations: 3x = 24 Divide both sides by 3 to give x= 8. Substitue this value of x in the first equation to give 8 + 3y = 2 Subtract 8 from both sides: 3y = -6 Divide both sides by 3: y = -2 Solution: (X, y) = (8, -2)
4x+3y = 6 3y = -4x+6 y = -4/3x+2 in slope intercept form
5(-2)+(-3)(-4) =-(10)+12 =2
5x+3y
5y-2y= 3y+2 5y-2y-3y= 2 0y= 2
2x-3y=13
2
-2 = 3y-18-5y 16=3y-5y 16=-2y y=-8
(3y + 5)(y - 2)
2(-2)-3y=6 which is equal to -4 -3y = 6 which is equal to -3y = 10 which is equal to y = -(10 / 3) = -3.333...
(2, 2)
2
x+3y=2 x= -5 y = 1
2x - 3y = 6 2x = 6 + 3y 2x - 6 = 3y : 3y = 2x - 6 y = 2/3x - 2
(3, 2) because x = 3 and y = 2
x = 5 y = 2 4x - 3y = ? 4(5) - 3(2) = ? 20 - 6 = 14