Question

Below is a graph that represents the total profits for a third month. Write the equation of the line that represents this graph. Show your work or explain how you determined the equations.

Answer 1

I do believe it is -1 1/2 because I chose two points on the graph (0, 300) and (150, 200). To find slope you need to plug it into an equation, which in this case looks like, (150-0)/(200-300) which then goes to 150/-100, which then simplifies to 15/-10, and then it converts to -1 1/2.