Find the unit rate (how much for one hour)

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

What will the graph look like for a system of equations that has no solution? a. the lines will be perpendicular. b. the lines will cross at one point. c. both equations will form the same line. d. the lines will be parallel.

Select the number of ways in which a line and a circle can intersect