Question

What is the solution to the system of equations?

y = 1.5x – 4

y = –x

Answer 1

@tamirhodges99 do u now hw to tag ppl?

Answer 2

no

Answer 3

how u do it is by adding an @ in front of some1s name like @tamirhodges99

Answer 4

@mathmale

Answer 5

@likeabossssssss

Answer 6

ok I got it now

Answer 7

yep good job

Answer 8

In a system of equations, you either set one of the variables equal or you substitute in a value for one variable.

Here, we would pick option 2, substitute a value in, because it already gives you a value: \[y=-x\]So we can replace \(y\) with \((-x)\) in the first equation.

Answer 9

You have \(y=1.5x-4\), replacing with \(\color{red}{y=-x}\):\[\large{y=1.5x-4\rightarrow \color{red}{-x}=1.5x-4}\]Now solve for \(x\), what do you get?

Answer 10

@tamirhodges99 If you are confused in any way, feel free to ask. :)

Answer 11

@kittiwitti1 very confused lol

Answer 12

Okay, restarting:
You have two equations here, which are \(y=1.5x-4\) and \(y=-x\).
You see that the value of \(y\) is already given as \(\color{red}{y=-x}\).

Following so far?

Answer 13

yes

Answer 14

tamir: Why not share what you DO understand, and then ask questions aimed at clearing up what you don't understand? kittiwitti1 has been trying to help you; "I'm confused" is no way to thank her.

Answer 15

Okay, good.
Now that we have the value for one variable (\(\color{red}{y=-x}\)), we can \(substitute\) it into the other equation, like this:\[y=1.5x-4\]\[\color{red}{-x}=1.5x-4\]
Do you understand what I did?

Answer 16

THANK YOU SO MUCH I HAVE FOUND MY ANSWER (:

Answer 17

Good ☺

Answer 18

By the way, when someone has helped you get the correct answer you can hit the \(\color{royalblue}{\text{blue}}\) "Best Response" button to give them a medal. ☺

Here: http://prnt.sc/cwrgud

Answer 19

Happy OpenStudying! ♣

Answer 20

Thank you, kittiwitti1.