Algebra 1 September 21 & 22, 2018

functions Last class: we introduced domain and range and how you can find these by looking at the numbers you are given Are there any questions on domain and range? We’re going to continue with domain and range, but now we’re going to be looking at graphs

Functions – domain and range Remember… Domain: The complete set of x values that can be used in the function Range: The complete set of y values that can be used in the function

Functions – domain and range So, what’s changed? Just the fact that we now have a picture to look at. That’s it! But first, let’s add a few extra things…nothing terrible, I promise.

Functions – domain and range X-intercept: This is where the graph crosses over the horizontal (or x) axis Y-intercept: This is where the graph crosses over the vertical (or y) axis Graphs can have more than one of each or none at all

Functions – domain and range

Functions – domain and range

Functions – domain and range