To find the x-intercept of the equation 3x + 12 = -6, we need to set y (or f(x)) to zero and solve for x:
3x + 12 = -6
3x = -18
x = -6
Therefore, the x-intercept is -6, which means the graph of this equation crosses the x-axis at (-6,0).
x intergraph of 3x+12=-6
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