# Thread: I have a question that I don't know how to do.

1. ## I have a question that I don't know how to do.

Calculate the area bounded by the equations: y= 15 - 3x and y/3 +4 = 2x and the x-axis.

Could you do it step by step and show your working for me?

2. Have you tried to do anything at all for yourself? Have you graphed the lines? If so, then you know that you are asked for the area of a triangle.

The formula for area of a triangle is (1/2)bh where b is the length of the base and h is the height. Here, b is equal to the difference of x values where the two line cross the x-axis. h is the y value where the two lines cross.