Answer:
Equation in slope-intercept form is 
Step-by-step explanation:
We need to write equation in slope-intercept form to represent the relationship shown in the table.
The general equation of slope-intercept form is: 
where m is slope and b is y-intercept.
Finding slope using point (-2,-6) and (0,0)
The formula used is: 
We have 
Putting values and finding slope

Using slope m= 3 and point (-2,-6) we can find y-intercept

So, we have y-intercept b =0
Equation in slope-intercept form having slope m= 3 and y-intercept b =0 is:

So, Equation in slope-intercept form is 