1. Warm-up
Is the following set of ordered pairs a function? Explain why or why not. {(-1, -2), (0, 2), ( 1, 4), (3, 8)}
Make a table, or T-chart, using the following domain values for the given function. Domain values: {-2, -1, 0, 1, 2} y= -3x + 9
Is the function in #2 linear? Explain.

2. Are arithmetic sequences also linear functions?
Can we take a sequence and write it as a set of ordered pairs?
The term position is my x-value and the value of the term at that position is my y-value.
So lets look at the following sequence: 3, 7, 11, 15, …
We can write this sequence as a set of ordered pairs to determine if it can be a function. {(1, 3), (2, 7), (3, 11), (4, 15), …}

3. Are arithmetic sequences also linear functions?
Is this set of ordered pairs a function? Why or why not? {(1, 3), (2, 7), (3, 11), (4, 15)}
Can we figure out the function for these ordered pairs?
Let’s graph this function on a coordinate plane to see if it’s linear.

4. Are arithmetic sequences also linear functions?
Graph the ordered pairs and overlay with a line. {(1, 3), (2, 7), (3, 11), (4, 15)}