Answer:
y=2x
Explanation:
The form of the equation is y=mx+b
First find any two points on the line. (0,0) (1,2)
To find the slope find the difference in y over the difference of x

(0-2)/(0-1)
Solve for slope
-2/-1
2
y=2x+b
Put one of the points in for x and y. (0,0)
0=2(0)+b
b=0
y=2x