Solve the following system by graphing. Check your solution.
a) 3x + y = 5
-x + 3y = -15

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- shelby1290

Solve the following system by graphing. Check your solution.
a) 3x + y = 5
-x + 3y = -15

- schrodinger

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- misty1212

HI!!

- shelby1290

hey

- misty1212

does it really say "solve by graphing"?

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## More answers

- shelby1290

yes lol

- misty1212

a lousy method, but it is certainly easy using the computer

- misty1212

http://www.wolframalpha.com/input/?i=3x%2By%3D5%2C-x%2B3y%3D-15

- misty1212

you can see that they intersect at the point \((3,-4)\)
there are lots of simpler ways to do it though

- shelby1290

yea i've been trying https://www.desmos.com/calculator but idk how they got (3,-4)

- misty1212

use wolfram
see how easy it was?

- shelby1290

i think the graph on my worksheet is too small to draw on

- misty1212

what does it look like?

- shelby1290

i'll take a picture of it
brb one sec

- misty1212

i typed both in here https://www.desmos.com/calculator
got the same answer

- shelby1290

##### 1 Attachment

- shelby1290

@misty1212 that's what it looks like ^

- misty1212

they did not leave you a lot of room did they?

- misty1212

type them both in to desmos if that is what you want to do, then copy on to your graph

- shelby1290

not at all lol

- misty1212

when i sent the desmos link it did not include the graphs, you have to type them in

- misty1212

but they will definitely intersect at \((3,-4)\)

- shelby1290

okay that's fine i'll just make do and fill in the points myself

- misty1212

good idea!

- shelby1290

desmos has a feature where you can click the line and to tell what the exact point is

- shelby1290

but thank you

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