Question

http://prntscr.com/8n6jqs

Answer 1

Substitute x and y as 2 and 1 and then note down that equation. Do the same with 3 and 4 . What you will then get are simultaneous linear equations in two variables. Solve them for x1 and y1 and then substitute the found values in the original eqaution

Answer 2

would my answer be d?

Answer 3

Well first find the slope, using the following formula: \[m = \frac{ y_{2}-y _{1} }{ x _{2}-x _{1} }\] where your coordinates represent \[(x_1,y_1)~~\text{and}~~(x_2,y_2)\]
Once you manage to get that, plug in m and your first coordinates in the point - slope form: \[y-y _{1}=m(x-x _{1})\]

Answer 4

y=3x-5?

Answer 5

Which one from your options?

Answer 6

is my answer d?

Answer 7

No, please go over what I've said, it will take you 5 minutes to do, rather than wasting time to guess.

Answer 8

m=3

Answer 9

Yes! Now you have the slope

Answer 10

Now do the next step

Answer 11

y−1=3(x−2)

so my answer is a?

Answer 12

Yes!

Answer 13

Thnx

Answer 14

Wasn't that so much better than just guessing? :)