1 Warm Up – Monday 4/14 2. What would be the average price for a ticket in the year 2004? What...
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1
Warm Up – Monday 4/14
1. Write an equation that has a slope of 3 and y-intercept of
2. What would be the average price for a ticket in the year 2004? What sort of correlation is depicted here?
3. Simplify:
4. Selena get paid $100 a week, plus $5 for each hour she works. Write a linear equation to represent how much she gets paid?
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2
Warm Up – Monday 4/14
1. Write an equation that has a slope of 3 and y-intercept of
2. What would be the average price for a ticket in the year 2004? What sort of correlation is depicted here?
3. Simplify:
4. Selena get paid $100 a week, plus $5 for each hour she works. Write a linear equation to represent how much she gets paid?
Y = 3x + ½
$21 and positive
2x + 7
Y = 100 + 5x
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3
Countdown to STAAR
19SCHOOL DAYS
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This Week in Work (TWIW)• Homework Due Thursday!• Mastery Quiz each day
• Project Due Monday, April 13
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TutoringMorning
(8:05 – 8:40 AM)Afternoon
(4:15 – 4:45 PM)
Monday
Tuesday
WednesdayThursday
Friday
Saturday Mock STAAR
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Random Fact
Life HacksItaly
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By the end of class today…SWBAT interpret the meaning of slope and intercepts in real world situation. (A.6A, A.6B)
Why This MattersInequalities are totally useful in real life!
Our Goals This Week:HW 90%
D.O.L. 75%
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Different Ways to Determine Slope
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Rapid Fire
Identifying Slope and Y-Intercept in Real Life Situations
Slope Y-Intercept
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Quick Practice
Slope Y-Intercept1. FedEx charges a flat fee per package of $4 as well as 35 cents per pound. 2. Jimmy, a roofer, charges $200 for all jobs, then $25 per square foot of roofing.3. A baby is born with a weight of 8 pounds. It will add about 11 pounds per year.
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Example 1
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Example 2
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Example 3
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A 25 foot ladder is leaned against a wall. The ladder reaches 24 ft high and the base is 7 feet from the wall. Find the slope of the ladder.
White Board Practice
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A 25 foot ladder is leaned against a wall. The ladder reaches 24 ft high and the base is 7 feet from the wall. Find the slope of the ladder.M = -24/7
White Board Practice
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Megan works at a sporting goods store and the graph details the number of hours she worked and the total amount paid. What is the slope of the line and what does it mean in this situation?
White Board Practice
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Megan works at a sporting goods store and the graph details the number of hours she worked and the total amount paid. What is the slope of the line and what does it mean in this situation?
White Board Practice
M= 7.5
Megan makes $7.50 per hour
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18
Which line appears to have an undefined slope?
White Board Practice
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19
Brian won an apple eating contest by eating apples at a steady pace for 30 minutes. The graph below shows the number of apples Brian ate over a 30-minute interval. How many did Brian eat per minute?
White Board Practice
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20
Brian won an apple eating contest by eating apples at a steady pace for 30 minutes. The graph below shows the number of apples Brian ate over a 30-minute interval. How many did Brian eat per minute?
M= 3
White Board Practice
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True Story
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22
Example 1: On your handout!
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Example 2: You try!
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Example 2: You try!
x
(0 ,10,000)
𝑚=−50007
(14 ,0)
started 10,000 gallons
volume or 714.29
gallons hour
volumezero 14 hours
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Example 3:
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Example 4: You try!
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Example 4: You try!
𝑦=70 𝑥+20
(0 ,20)
𝑚=70
𝑡𝑜𝑡𝑎𝑙𝑐𝑜𝑠𝑡$20( h𝑡 𝑒𝑟 𝑒′ 𝑠𝑎 $ 20 𝑓𝑒𝑒)
𝑡𝑜𝑡𝑎𝑙𝑐𝑜𝑠𝑡7
𝑑𝑜𝑙𝑙𝑎𝑟𝑠 h𝑐 𝑒𝑒𝑟𝑙𝑒𝑎𝑑𝑒𝑟
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Find the slope and describe its meaning.
The ________________ is
increasing/decreasing by
________ per ______________
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29
Find the slope and describe its meaning.
The depth is
increasing/decreasing by 2
meters per second.
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30
The table below shows the time and volume of a draining pool. Which statement is true?
a. The pool is empty after 14 seconds. b. The pool’s volume is decreasing by 1440 gallons per hour.
c. The pool starts with 10,080 gallons in the pool.
d. If they started draining the pool at 10 AM, then they finished at 12 PM.
Time, x (h) Volume, y (gal)
2 8640
6 5760
10 2880
12 1440
14 0
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STAAR CHALLENGE!1. The equation for the speed of a ball that is thrown from a building is given
by , where is the speed and is the number of seconds after the ball is thrown. Which of the following statements is correct?
A. For every second that passes after the ball is thrown, the speed of the ball increases by 28 feet.
B. The ball is thrown from a building that is 28 feet tall.
C. For every second that passes after the ball is thrown, the speed of the ball decreases by 28 feet.
D. The ball is still off the ground after 5 seconds.
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32
STAAR CHALLENGE!
1. The equation for the speed of a ball that is thrown from a building is given by , where is the speed and is the number of seconds after the ball is thrown. Which of the following statements is correct?
A. For every second that passes after the ball is thrown, the speed of the ball increases by 28 feet.
B. The ball is thrown from a building that is 28 feet tall.C. For every second that passes after the ball is thrown, the speed of the ball
decreases by 28 feet. D. The ball is still off the ground after 5 seconds.
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Independent practice
Directions
• Complete at least _9_ problems
• If you have a question, ASK!• Check work at the board,
help your neighbor
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DOL – STAAR CONDITIONS!
Silence.No wandering eyes.
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Trade papers with your neighbor!
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DOL
1. C2. D3. B4. B5. C
# correct Percentage %
5 100%
4 80%
3 60%
2 40%
1 20%
0 0%
If your score ≥ 80% YOU’RE STAAR READY!
If you scored 40% or below, you NEED to come to tutoring,
TODAY!