What is the slope of the line 3 x minus 9 y is equal to 4 ?

Rewrite the equation in slope-intercept form, y = mx + b, where m is the slope. From 3x − 9y = 4, we get −9y = −3x + 4, so y = (1/3)x − 4/9. The slope is 1/3, which is choice A.

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