The number of calories, C, a person burns and the time, T (in minutes), the person spends performing an activity vary directly. A 150 pound
person can burn off 75 calories by sitting in class for 30 minutes. How
long must a 150 pound person sit in class to burn off 545 calories?

Graph a triangle (xyz) and reflect it over the line y=x to create triangle x’y’z’. describe the transformation using words. draw a line segment from point x to the reflecting line, and then draw a line segment from point x’ to the reflecting line. what do you notice about the two line segments you drew? do you think you would see the same characteristics if you drew the line segment connecting y with the reflecting line and then y’ with the reflecting line? how do you know?