The first new concept we have learned this semester is about finding the slope (or rate of change) of a linear function. Remember that we've said any set of x's and y's can be called a relation, but only some relations are functions; specifically, the relations where no x (or input) is repeated with different y's are called functions. Then we said that we can look only at a set of functions and then determine whether each one is a linear function or a nonlinear function (remember that linear functions make a straight line on a graph, and they have a constant rate of change or slope). Once we know that a function is linear, we can then find its rate of change or slope. So far, we've specifically looked at how to find this slope from a table of values and from a graph. For a review over finding the slope, click on the pictures below to get a video explaining how to find slope.
|
8th Grade Math TeamArchives
April 2015
Categories
All
|