Question

What would the equation of a line in standard form be if the equations were (1,2) and (2,3)?

Answer 1

@Preetha ??

Answer 2

1x - y = 1?

Answer 3

Check your signs. You have a sign wrong... otherwise correct.

Answer 4

(and you don't need to put the coefficient "1" in front of the x)

Answer 5

Which sign do I have wrong? Can you explain why its wrong? @DebbieG

Answer 6

Can you show your work?

You started with the 2 points, (1,2) and (2,3).... what did you do first?

Answer 7

y - (3) = 1(x - 2)
y - 3 = 1x - 2
y - 3 = 1x - 2
-1x -1x
-1x + y - 3 = -2
+3 +3
-1x + y = 1
1x - y = 1

Answer 8

@DebbieG

Answer 9

Good. it all looks good.... until the final step.

What did you do, to get that pesky negative coefficient on the x, to be positive?

Answer 10

I multiplied everything by -1

Answer 11

Well, almost everything.

Everything on the left side, you did. ;)

Answer 12

-1! Thank you:)

Answer 13

exactly! :) and you're welcome. :)

Answer 14

@DebbieG Can I have your help with another question that i am a little confused about?

Answer 15

I can try to help, but you should really post each question separately. It looks like you're offline now and I have to go do some other things, but just post it as a new question, and someone will help! :) You can always tag me if you want, and if I'm online I'll try to help.