4x - y = 7 I need ordered pairs for this linear equation, I was wondering of some possible solutions. Thanks!

Answer 1

Uhh im not sure if this is right but i think you should first put it in slope intercept form.

then make an X and Y chart to find solutions.

y=4x-7

(0,-7)
(1, -3)
(2, 1)

Answer 2

Would (2,1) (3,5) and (4,9) work as well? Thanks!

Answer 3

yea i got (2,1) in my first post. Yeah, they should all work.

Answer 4

Even though you switched it to the y = 4x - 7? Is this all the same or is the -7 and 7 the constants changed? Thanks

Answer 5

no, when i put in slope intercept form i got -7

the original equation was
4x-y=7
subtract 4x to both sides
-y=-4x+7
you cant have a -y so move the negative over, this will change the sign of everything

y=4x-7

Answer 6

if you had 4x+y=7
then the slope intercept form of that would be

y=-4x+7

Answer 7

So which is the correct method? Switching the original, or just using variables as i did to make the equation true

4x-y = 7

4(2) - 1 = 7 (2,1)

4(3) - 5 = 7 (3,5)

4(4) - 9 = 7 (4,9)

Which method is correct? Or does it not matter because the equation has infinate solutions? Thanks!

Answer 8

Both method is fine.

Answer 9

Are you a math teacher? Just wondering?

Answer 10

no im not. but im in alg 2

Answer 11

That makes sense..High School?

Answer 12

yeah high school.

Answer 13

Ok! Have a good night and thanks for the help!