Answer:
4.05
Explanation:
Pre-Solving
We are given the equation of the line y = 4.05 + 0.4d, and we want to find the y-intercept of this line.
The y-intercept is the value in which the line passes through the y-intercept. The value of x (or d in this case) is 0.
Solving
As the value of x (or d) at the y-intercept is 0, we can plug 0 into the equation.
Substitute 0 for d.
y = 4.05 + 0.4(0)
y = 4.05 + 0
y = 4.05
The y-intercept is the point (0, 4.05), or you can simply say that the y-intercept is 4.05.