Question

Use the graph to state the solution for the system.
x – y = –3 (line a)
x + y = 3 (line b)

A.

(0, –3)








B.
(0, 3)







C.

(–3, 0)









D.
(3, 0)

Answer 1

Do you know what it means graphically to find the solutions to a system of equations? Do you know what point it is on a graph?

Answer 2

no , and yes I think.

Answer 3

When you are finding solutions to a system of equations, you are finding where on the graph the lines cross (or intersect [same thing]). Where on your graph do the lines cross each other?

Answer 4

You can substitute the answers into your system.

Answer 5

What are the coordinates. And yes, you can sub in your given values, but if you are given the graph, the point where they intersect is the solution. It's easier this way than doing all that math, but it will work as well.

Answer 6

I didn't notice she had a graph, but you can do it either way. When you're given the graph, it's much easier when you just look at the intersection like IMStuck said.

Answer 7

What are the coordinates of the point where the lines intersect?

Answer 8

Stay with us, eflatt13!

Answer 9

3?

Answer 10

That's the y coordinate. What is the x coordinate?

Answer 11

0?

Answer 12

Yes. :D

Answer 13

So, what is the order pair when y = 3 and x = 0?

Answer 14

Yep, see that's the easy way to figure that out!

Answer 15

(3, 0) ! :)

Answer 16

Perfect! Good job. :)

Answer 17

Umm...the x comes first. Look at your graph again.

Answer 18

oh yeah, lol.

Answer 19

No that's not right.

Answer 20

(x,y)

Answer 21

I already had that comment typed in because I thought she'd get it. derp.

Answer 22

sorry..