How would you answer this question?thanks

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

What is a graph with a never ending line called?

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.