Question

what is the value of y so that the ordered pair (5, y) is a solution to the equation -5x + y = -40

Answer 1

Plug in x = 5, and solve for y.

Answer 2

-5 (5) + y = 40

y = ??

Answer 3

-5 (5) + y = 40

y = ??

Answer 4

35

Answer 5

What is -5 multiplied by 5?

Answer 6

-25

Answer 7

Hint: -5 * 5 = (-1) * (5 * 5) = ??

Answer 8

Ok, so now we have:

-25 + y = 40

We need to isolate y. So if we add 25 on both sides we will get y all alone.

So, add 25 on both sides. What do you get?

Answer 9

25 and 65

Answer 10

My bad, I keep forgetting that it's -40

-25 + y = -40

y = -40 + (-25) = ??

Answer 11

-65

Answer 12

My bad, I keep forgetting that it's -40

-25 + y = -40

y = -40 + (-25) = ??

Answer 13

-65

Answer 14

Errr, I keep making a mistake.

y = -40 + 25 = ??

Answer 15

This will get you your final correct answer. :)

Answer 16

You are saying that y=-65. Check your own work by substituting x=5 and y=-65 into the given equation. Either this equation will be true or it will be false. Which result do you get?

Answer 17

-25

Answer 18

Are you sure?

-50 + 25 = -25

What is -40 + 25 = ?

Answer 19

-15

Answer 20

And that's your final answer!

Answer 21

thank you

Answer 22

It was my pleasure!