The point slope equation for this given situation is given by:
m(x-x1)=y-y1
where:
slope,m=(y-y1)/(x-x1)
given 2 points:
(2,160) and (2.25, 220)
hence:
slope,m=(220-160)/(2.25-2)=60/0.25=240
hence the equation in point-slope form will be:
240(x-2)=y-160
Answer: 240(x-2)=y-160