this box plot shows information about marks scored in a test. nobody gained exactly 30, 48 or 70 marks. 120 students gained less than 70 marks. how many students gained more than 48 marks?

Graphing the related system means that you do not have to rewrite the equation to set it equal to 0. It is easier because you can just graph each side of the equation. Sometimes it is difficult to locate the intersection point for the system. You might have to zoom in a lot or figure out how to resize the window. Using the related function lets you focus on the x-axis to find the points.

just took the test 100% sure.