Question

Long question anyone?(:

Answer 1

A telephone company charges a fixed monthly rate plus a rate per minute of usage. The company charges $135 for 100 minutes of usage and $375 for 500 minutes of usage. An equation can be written to show the relationship between the total minutes used (x) and the total monthly charges (y). Which of the following best describes the steps to draw the graph of y against x?

Draw a graph which joins the points (135, 100) and (375, 500) and has a slope = 0.6

Draw a graph which joins the points (100, 135) and (500, 375) and has a slope = 0.6

Draw a graph which joins the points (100, 135) and (500, 375) and has a slope = 1.67

Draw a graph which joins the points (135, 100) and (375, 500) and has a slope = 1.67

Answer 2

You want to keep the place it's in consistent so let's do:

Then you just use the slope formula to find the slope like you normally would with 2 points