Question

An unknown number y is 10 more than an unknown number x. The number y is also x less than 3. The equations to find x and y are shown below.

y = x + 10
y = −x + 3

Which of the following statements is a correct step to find x and y?

Add the equations to eliminate x.
Multiply the equations to eliminate y.
Write the points where the graphs of the equations intersect the x-axis.
Write the points where the graphs of the equations intersect the y-axis.

Is A correct ?

Answer 1

Which one is A?

Answer 2

@MilaHutcherson

Answer 3

Add the equations to eliminate x

Answer 4

Okay. So let's start off with this step:
Do YOU think A is correct?

Answer 5

Yes

Answer 6

Why do you think so?

Answer 7

I think that I should eliminate x to find y

Answer 8

Hold on for a second: Do the answers apply for both equations?

Answer 9

yes

Answer 10

So you are correct. A is the answer.

Answer 11

Okay thank you

Answer 12

Np. :P