Question

9x+12y+21=0 px+qy+7=0 fine the p and q​

Answer 1

Did you mean numbers that satisfy given condition also satisfies px+qy+7=0?

If no, please put new question on brainly.

$\text{Graph Approach}$

The graph of $\text{9x + 12y + 21 = 0}$ is a straight line.

For its solutions to be same, it is required that both are same lines.

Notice the number 7 in the last graph. If we multiply by 3:

• $3px+3qy+21=0$
• $9x+12y+21=0$

These two are same equations.

$p=3, q=4$ is the correct answer. Hope it helps.