Answer:
In slope intercept form it's going to be y=3x-1
Explanation:
In order to write a equation we need 2 information
FIrst the Rate of change
Second, the initial value, which is the +b part
This is how you can calculate the rate of change m=(y2-y1)/(x2-x1)
And the initial value(y-intercept) is always what value is y when x=0, (0,y), in this case it's (0,-1)