Asked by Matt

Three ordered pairs for 4x - y = 7
Answered by Rachelle
All you have to do is try out some numbers. An easy way is to place 0 in for x and y to find some easy x and y-intercept points.

Just plug in 0 for x. 4 times 0 is obviously 0, so 0 minus what equals 7? 7. Do the same for y.

Hope I helped! :-)
Answered by Matt
Are these possible solutions? (2,1) (3,5) and (4,9)? Thanks for the help!
Answered by Melanii
yes!! to check, just plug in the numbers and see if they fit. :)
Answered by Rachelle
Yep! They are all solutions! Good job! :-)
Answered by Matt
Thanks but someone else told me that the equation is suppose to be transferred to function form which is y = 4x - 7, and the possible x and y pairs would be (-1, -11) (0,-7)
(1,-3. Which method is correct, or does the line have infinate solutions? Thanks!
Answered by Melanii
both are right. the line does have infinite solutions, so either way works. it really depends on what you think works best or how your teacher teaches it.
Answered by Matt
Thanks! I thought I was correct to begin with! Are you a math teacher?
Answered by Melanii
no, actually i'm in seventh grade. i'm taking algebra 1. :)
Answered by Matt
Nice! So you do this for fun? Or do these people pay you?
Answered by Melanii
lol i just came on here because
1. i needed help w/ homework
2. my friend and i can work together here

my home work is really annoying tonite. if you look under many of the algebra or algebra 1 topics by me or Rachelle you'll see why i'm here. :):):)
Answered by Matt
My homework is annoying every night. Well good luck to you! Thanks for the help!
Answered by Melanii
good luck to you too, and no problem :)
Answered by Rachelle
Yes, both ways are the same. The way the other person told you is in what is called y-intercept form, and the form that you have it in right now (4x - y = 7, I think it was) is called standard form.

Basically, just by adding and subtracting things to move them around, you can get them in and out of the different forms. No matter what form you're in, you get the same answers.
Answered by Melanii
hi rachelle did you get number 5.3.4 yet?
Answered by Melanii
sorry 5.4.3?
Answered by Rachelle
nope I'll repost it
Answered by Melanii
i just did too. :)
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