Point P lies on the line 3x+ 4y - 12 = 0. If X- coordinate of P is a, then its y-coordinate is ______.

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Solution

The correct option is A

The points on the line should satisfy the equation of the line.
So , the point P(a,y) satisfies the equation. Hence,
3x+ 4y - 12 = 0
3(a) + 4(y) -12 = 0
4y = 12-3a
Y = $\frac{(12 - 3 a)}{4}$

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