3x+4 = 5x-6 3x-5x = -6-4 -2x = -10 x = 5
3x - 2y = 12 2y + 12 = 3x 2y = 3x - 12 y = 3x/2 - 6 Gradient = 3/2 Y-intercept = -6
your equation is y=3x + 4 here are five parallel equations... y=3x + 5 y=3x + 6 y=3x + 7 y=3x + 8 y=3x + 9
3x - 6y = 9Subtract 3x from each side:-6y = -3x + 9Multiply each side by -1 :6y = 3x - 9Divide each side by 6:y = 0.5x - 1.5
y = mx + b is standard form where m = slope and b = y intercept 6x - 2y = 18 -2y = -6x + 18 -y = -3x + 9 y = 3x -9 m = slope = +3
3x+12 = 18 3x = 18-12 3x = 6 x = 2
3x = 18divide both sides by 3x = 6
6-3x+12=0 6+12-3x=0 18-3x=0 18=3x x=6
18=3(3x-6)
The answer is x = 6
4x+6-7x+9=18-3x+15=18-3x=3x=-1
3x=18 x=18/3 x=6
-3x+14 = -4 -3x = -4-14 -3x = -18 x = 6
4=3x-14 18=3x I carried the 14 over and it became positive. x=6 I divided 18 by 3.
27-9 =18. 18/3 =6
x^2+3x-18=0 (x+6)(x-3)=0
If x-3x=18 then x equals -9