Option (C) It means the technician charges a fixed amount of $75 for the repair is correct.
<h3>What is a straight line?</h3>
A straight line is a combination of endless points joined on both sides of the point.
The slope 'm' of any straight line is given by:
![\rm m =\dfrac{y_2-y_1}{x_2-x_1}](https://tex.z-dn.net/?f=%5Crm%20m%20%3D%5Cdfrac%7By_2-y_1%7D%7Bx_2-x_1%7D)
The graph of the equation is given:
From the graph the equation of the straight line will be:
y = 45x + 75
For the y-intercept plug x = 0
y = $75
The y-intercept represents the technician charging a fixed amount of $75 for the repair.
Thus, option (C) It means the technician charges a fixed amount of $75 for the repair is correct.
The graph is attached is in the picture.
Learn more about the straight line here:
brainly.com/question/3493733
#SPJ1