3x+8 = 12 3x = 4 x = 4/3
y=3x+4 -3x+y=4 x=-1/3
3x + 4y - 4 = 0 y = -2 3x + 4(-2) - 4 = 0 3x - 8 - 4 = 0 3x = 12 x = 4 (4,-2)
(2, -1)
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Well, if 3x equals 12, then x equals 4. And if y equals 3x, then y equals 3 times 4, which is 12. So, y equals 12. Math can be a piece of cake when you break it down like that!
3x - y = 4 Get y by itself to see if it is the same as y = 3x - 4: 3x = 4 + y 3x - 4 = y Therefore, 3x - y = 4 is the equivalent of y = 3x - 4.
y = 12. It's the transitive property. y = 12 = 3x.
-3x+14 = -4 -3x = -4-14 -3x = -18 x = 6
5x - 4 = 3x + 6 5x - 3x = 6 + 4 2x = 10 x = 5
3x - 4 = 73x = 11x = 3.66666...
3x+8 = 12 3x = 4 x = 4/3
2y-3x=4
3x + 4 = 16 3x = 16 - 4 x = 12/3 x = 4
y=3x+4 -3x+y=4 x=-1/3
3x + 4y - 4 = 0 y = -2 3x + 4(-2) - 4 = 0 3x - 8 - 4 = 0 3x = 12 x = 4 (4,-2)
(2, -1)