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3x + 4y = 12 subtract 3x to both sides

4y = -3x + 12 divide by 4 to both sides

y = (-3/4)x + 3 directly we say that y-intercept is 3, to find x-intercept assigning y to 0;

0 = (-3/4)x + 3

-3 = (-3/4)x multiply by -4/3 to both sides

(-3)(-4/3) = (-3/4)(-4/3)x

4 = x the x-intercept is 4

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