Slope from a graph

The  exercise appears under the 8th Grade Math Mission. This exercise starts to introduce and practice the idea of slope as it related to algebra and geometry.

Types of Problems
There are two types of problems in this exercise:


 * 1) Identify the correct graph: This problem has four graphs pictures. The student is asked to select which graph illustrates a particular slope.Isoal1.png
 * 2) Calculate the slope: This problem has a graph but also specifies two points on the graph. The student is asked to calculate the slope of the graph.Isoal2.png

Strategies
Knowledge of the slope formula and mnemonic will help towards completing this exercise.
 * 1) Slope is rise over run. This understanding can assist on the first type of problem.
 * 2) The formula for slope is (y2-y1)/(x2-x1). This can help on the second type of problem.

Calculator coding
This program will calculate the slope of a line given the coordinates of two points.
 * Prompt A,B,C,D
 * Disp (D-B)/(A-C)>Frac

Real-life applications

 * 1) Slope is intimately tied to calculus and the derivative, so any reference to slope can find importance in the calculus.
 * 2) Being able to recognize slope quickly can assist recognizing if answers are correct when checking work.