Three ordered pairs for 4x - y = 7
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! :-)
Are these possible solutions? (2,1) (3,5) and (4,9)? Thanks for the help!
yes!! to check, just plug in the numbers and see if they fit. :)
Yep! They are all solutions! Good job! :-)
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!
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.
Thanks! I thought I was correct to begin with! Are you a math teacher?
no, actually i'm in seventh grade. i'm taking algebra 1. :)
Nice! So you do this for fun? Or do these people pay you?
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. :):):)
My homework is annoying every night. Well good luck to you! Thanks for the help!
good luck to you too, and no problem :)
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.