1. 3. f(2): X-value is 2, find the y value
1. Y-intercept: Beginning value; Where graph crosses y-axis
2. X-intercept, Zeros, Break-even point: Where graph crosses x-axis
3. f(2): X-value is 2, find the y value
4. f(x) = 4: y value is 4 find the x value
5. Increasing:
The x-values where the graph is going up
6. Decreasing:
The y-value where the graph is going down
7. Maximum: ( , )
8. Minimum: ( , )
Graph: Height of a Ball
Height (ft)
Time (Sec)

2. 2. Find Break-even point: 3. X-intercept: 4. Find and interpret f(5) :
1. Y-intercept:
2. Find Break-even point:
3. X-intercept:
4. Find and interpret f(5) :
5. Find and interpret f(x) = 8:
6.Increasing:
7.Solve by the graph: 2x – 4 = 10
Profit from Sally’s Lemonade Stand
Profit ($)
Number of Glasses Sold

3. Projected Profit of Concert Based on Ticket Price
1. Initial Value:
2.Break-even point:
3. Find and interpret f(2) :
4. Find and interpret f(x) = 40:
5. Increasing:
6. Find and interpret the
maximum:
7. When is -4x2 – 40x – 50 = 20?
Projected Profit of Concert Based on Ticket Price
Profit (Hundred’s of Dollars)
Cost of Ticket ($)

4. Fare ($) Cost of Cab Rides
1. After how many miles will the companies be the same?
2. Explain when each company is a better value.
3. Find and interpret the y-intercept of A(x)
and what does it mean?
4. Find and Interpret B(2)
5. When is 3x + 1 = 4?
6. When is 3x + 1 = x + 5
Cost of Cab Rides
Company A
A(x) = x + 5
Company B
B(x) = 3x + 1
Fare ($)
Miles

5. Math I Unit 3: Interpreting Graphs
1. Find and Interpret Y-intercept
2. Find Break-even point:
3. X-intercept
4. Find and interpret f(5) :
5.Find and interpret f(x) = 6:
6. Solve by the table: 2x – 2 = 4
7. Write the NEXT-NOW equation
Profit of Selling Popcorn
Bags (x) 1 2 3 4 5
Profit (y) -2 2 4 6 8
Equation:
y = 2x - 2

6. 7) When is the graph increasing?
____________________________
8) When is the graph decreasing?
_____________________________
9) What is the maximum height?
3) Find and interpret the y-intercept?________________________________________

7. Math I Unit 3: Interpreting Graphs
What is the domain and range?
Is it a function? Explain
Find and interpret f(2)
Find and interpret f(8)
Find and interpret f(x) = 20?
Find and interpret f(x) = 46?
How does your answer to #6 relate to your range?
Suppose that the swing started 10 feet higher. What would f(3) become?
Explain how the answer to #8 is equivalent to f(3) + 10.

8. Stair Stories Climbed by Two Climbers
What time will they have climbed the same amount of stories?
2. How many stories will they have climbed?
3. Find and interpret the y-intercept of person A?
4. When x+2 = 4?
Stair Stories Climbed by Two Climbers
A(x) =(1/2)x + 5
B(x) =x + 2
Stories
Time (minutes)

9. 1. Find and interpret y-intercept
2. Find and interpret Break-even point:
3. Find and interpret zeros
4. Find and interpret f(4) :
5. Find and interpret f(x) = -4:
6. Solve by the table: 3x – 7 = 2
Profit of Selling Pompoms
# of
Pompoms (x)
Profit (y)
Equation: Y = 3x - 7

10. Delivery Charges of 2 Companies
1. After how many miles will the companies be the same?
2.Explain when each company is a better value.
3.Find and interpret the y-intercept of A(x) and what does it mean?
4. Find and Interpret B(2)
5. When is 2x + 3 = 2.5x + 1
6. When is 2x + 3 = 13?
7. Write the NEXT-NOW equation for B(x)
Delivery Charges of 2 Companies
x A(x) B(x)
0 3 1
2 7 6
A(x) = 2x + 3
B(x) = 2.5x + 1

11. Year Millions of Cars in US 1. Find and interpret f(1955)
2. Find and interpret f(x) = 17.4
3. When were there 11.5 million cars In the US?