1. y
The graph of a rule connecting x and y is shown. From the graph, when x is -1, what is y?
Give me a value of x that makes y positive, negative, equal to 0. x

2. The rule is y = x3 + 2x2 – 8x If x = -4, what is x3 + 2x2 – 8x?
When is
x3 + 2x2 – 8x = 16?
We can use the graph to solve equations. x

3. The rule is y = -x2 - 2x + 3 Solve -x2 - 2x + 3 = 4 -x2 - 2x + 3 = 0 y

4. What is the maximum value of
The rule is y = -x2 - 2x + 3 y
What is the maximum value of
-x2 - 2x + 3? x

5. y = 3 – 2x
y = 2x + 1
Here are the graphs of 2 rules.
When does
3 – 2x = 5 ?
2x + 1 = 0 ?

6. Here are the graphs of 2 rules.
y = 3 – 2x
y = 2x + 1
Here are the graphs of 2 rules.
When does
3 – 2x = 2?
2x + 1 = 2?
3 – 2x = 2x + 1 ?