March 13, 2017
Solve the systems below by substitution.
y=x+1
y = 5x + 17
Homework Answers:
1. (­5 , 9)
2. (3 , ­3)
3. (3 , ­8)
4. (­9 , 6)
5. (­2 , 6)
6. (7 , ­3)
7. (6 , ­3)
8. No Solution
y=x+1
­5x + y = 13
March 13, 2017
FIF.6 ­ Find the average rate of change.
At 6:00 p.m., the temperature was 75°F. At 11:00 p.m. that same evening,
the temperature was 60°F. What real number represents the average
change in temperature per hour?
A climber is on a hike. After 2 hours he is at an altitude of 400 feet.
After 6 hours, he is at an altitude of 700 feet.
What is the average rate of change?
A scuba diver is 30 feet below the surface of the water 10 seconds after he
entered the water and 100 feet below the surface after 40 seconds. What is
the scuba divers rate of change?
FIF.6 ­ Find the average rate of change.
(-3 , 2) , (5 , 5)
(-6 , 1) , (2 ,0)
(5 , 2) , (5 , 6)
March 13, 2017
FIF.6 ­ Find the average rate of change.
ACE.2 ­ Write equations in slope­intercept form
In order to join a dancing club, there is a $30 startup fee and a $4
monthly fee. Write an equation in slope-intercept form.
The U.S. Bureau of the Census predicted that the population of
Florida would be about 17.4 million in 2010 and then would
increase by about 0.22 million per year until 2015. Which of
the following linear models predicts the population, y, of
Florida (in millions) in terms of x, the number of years since
2010.
March 13, 2017
ACE.2 ­ Write equations in slope­intercept form
x
y
x
y
2
4
6
8
8
7
6
5
­2
2
6
8
3
9
15
18
Through two points:
(3 , 9) (1 , 5)
(-2 , 7) (1 , 1)
ACE.2 ­ Write equations in slope­intercept form