Question

(0,-1) , (1,1) , (2,3) type the correct equation of the line

Answer 1

  |5 |
  |4 |
  |3 |       O
  |2 |
_|1 |_O___________
-1 0  1  2  3  4  5
  o|-1

O= spots so there you go, I guess.

Answer 2

line, assuming ou want slope and stuff
y=mx+b
m=slope
b=y intercept

slope=(y2-y1)/(x2-x1) when you have the points (x1,y1) and (x2,y2)

poick any 2
(1,1) and (2,3)
slope=(3-1)/(2-1)=2/1=2
sloppe=m=2

y=2x+b
sub 1 point
(1,1)
1=2(1)+b
1=2+b
mnus 2
-1=b

y=2x-1 is equation