Is the Edge Cumulative Exam proctored or not and can you use ? Explain what you did to use during the exam

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

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.

Which choice has the correct steps in graphing the solution set to the following inequality? -45_> 20x-5y