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enyata [817]
2 years ago
7

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

Mathematics
1 answer:
Ksenya-84 [330]2 years ago
6 0

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

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