A. Using the High-Low Method, determine the total amount of Fixed cost and the Total amount of variable cost per unit. Draw the Cost line

B. Prepare a Scatter Diagram, plot the Actual Costs, and Visually Fit a Linear Cost Line to the points. Estimate the amount of Total fixed cots and the variable costs per unit

(Part A): I've already calculated the Fixed cost and the Variable Cost Per Units. However im not sure what its asking about the cost line. Does it want me to just show what a basic outline of a Fixed Graph and Variable Graph looks like?

(Part B): I've prepared a scatter diagram using the given information and ive created a Linear Trend line (what i assume is a Linear Cost Line) However i am not sure how to estimate the amount of total fixed costs and the variable Costs per unit.

We have to have everything included in an Excel document