Answer:
The equation for this stretch of roadway in point-slope form is 
Step-by-step explanation:
Equation in point-slope form:
The equation of a line in point-slope form is given by:

In which
is the point and m is the slope.
A stretch of highway has a 4% uphill grade. This means that the road rises 1 foot for every 25 feet of horizontal distance.
This means that 
The beginning of the highway (x = 0) has an elevation of 2,225 feet.
This means that
. So



The equation for this stretch of roadway in point-slope form is 