1. substitute x with 1,
y=35+25=60 its correct
substitute x with 2
y= 70+25=95 its correct
yes i get the y value from the table
2. the cost of repair rates as the amount of repair time increases.
3. the slope is gradient. the formula is to take y1-y2/x1-x2=9-6/1-0=3 3 is the slope. y-intercept is 6 because when the line touches the y axis, the the x value is 0. good luck!! if you need more help, feel free to comment here!!
