x=2 y=1.5
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3x-4x=12 that means -x equals 12 so x equals -12
3x + 4y = 12 Subtract 3x from each side 4y = 12 - 3x Divide by 4 on each side y = 3 - .75x The slope is what is multiplied by "x" or -.75
x = 4 and y = 0
3x - 4y = 10-3x - 4y = 8 -> add line 1 to line 2 3x - 4y = 100x - 8y = 18 -> -8y = 18 -> y = -18/8 = -9/4 -> 3x - 4*(-9/4) = 10 -> 3x + 9 = 10 -> 3x = 1 -> x = 1/3
Move everything except the y to the same side as 12 to put the answer in slope-intercept form. -4y=-3x+12 y=3/4x -3