Slope intercept form:
y= mx+b
Where:
m= slope
b= y-intercept ( where x=0 )
(0,0) , b= 0
For the slope apply the formula:
m= y2-y1 / x2-x1
Replacing with the table values:
m = 5.68-0 / 2-0 = 2.84
m= 8.52-5.68 / 3-2 = 2.84/1 = 2.84
m= 19.88-8.52 / 7-3 = 11.36/4= 2.84
m= 42.60-19.88/15-7 = 22.72/8=2.84
m= 2.84
Answer:
y= 2.84x