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How do you find ordered pairs that is a solution for the equation 4x – 3y = 12?

1 Answer

May 31, 2016

There are many .. $(6, 4) (9, 8)$ $(6, 4) (9 , 8)$ etc

Explanation:

First change the equation into an easier form:
$3 y = 4 x - 12$ $3y = 4x - 12$
$y = \frac{4}{3} x - 4$ $y = 4/3x - 4$

Now choose values of $x$ $x$ and substitute to find $y$ $y$ .

However, it will be easier to use multiples of 3 for values of $x$ $x$ .

eg. If $x = 6$ $x = 6$ , then $y = \frac{4}{3} \times 6 - 4 = 4$ $y = 4/3 xx 6 - 4 = 4$ $\Rightarrow (6, 4)$ $rArr (6,4)$

If $x = 9$ $x = 9$ , then $y = \frac{4}{3} \times 9 - 4 = 8$ $y = 4/3 xx 9 - 4 = 8$ $\Rightarrow (9, 8)$ $rArr (9,8)$ and so on.

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