Question

If (3, -2) is a solution of the linear equation 3x – py – 7 =0, then find the value of p.

Answer 1

Answer:

-1

Step-by-step explanation:

So to solve this, it tells you that (3, -2) is a solution so you can substitute x = 3 and y = -2 into the equation which would look like this:

$3*3-p*-2-7 = 0$

Then, you solve the equation for p:

first, simplify the left side

$9 +2p-7=0\\2+2p=0$

subtract 2 from both sides

$2p=-2$

divide both sides by 2

$p=-1$

Now, you have p = -1!

hope that makes sense :D