Interpreting linear graphs word problems

The  exercise appears under the 8th grade (U.S.) Math Mission. This exercise connects the graph of a linear function with some possible interpretations of key features of the graph, such as intercepts.

Types of Problems
There is one type of problem in this exercise:


 * 1) Use the graph to answer questions: This problem provides a linear function on a graph and a couple questions regarding the situation modeled in the graph. The student is asked to solve the questions being asked and write the answer in the space provided.Ilgwp1.png

Strategies
Knowledge of linear functions and graphs are encouraged to ensure success on this exercise.
 * 1) The slope is the rate of change of a function, it is found by calculating rise over run.
 * 2) The value of a function at a point is the y-coordinate of the point.
 * 3) The x-intercept and y-intercept are where a function intersects the x or y axis, respectively.

Real-life Applications

 * 1) Models of situations are common and an ability to translate between numerical, algebraic and geometric information is a skill used in the workplace.
 * 2) Several problems in this exercise could be called Real-life applications.