Slopes and Intercepts
Tables and Graphing
Functions?
Real - Life functions
The Life of Maki
100
What is the y-intercept of this graph?
1
100
Complete this Table for the function: y = x + 3
x_|_y
0 | _
1 | _
2 | _
x_|_y
0 | _
1 | _
2 | _
3
4
5
4
5
100
Linear Function, Nonlinear Function, or NOT a function?
NONLINEAR Function
100
Jimmy works at Bestbuy and gets paid an hourly rate, and also gets paid a bonus.
If the equation y = 20x + 15 represents the amount of money he can earn for a week, then what does the variable y stand for ?
If the equation y = 20x + 15 represents the amount of money he can earn for a week, then what does the variable y stand for ?
Amount of money $$$
100
Where will Maki be next year?
Australia
200
y = 10x - 13
What is the y-intercept for this function equation?
What is the y-intercept for this function equation?
-13
NEGATIVE
NEGATIVE
200
What number completes this table for the function: y = -2x + 3
x_|_y
-2 | 7
0 | 3
2 | _
x_|_y
-2 | 7
0 | 3
2 | _
What is -1?
200
What is the name of the method used to determine whether a graph is a function or not?
Vertical Line Test
200
Jimmy works at Bestbuy and gets paid an hourly rate, and also gets paid a bonus.
If the equation y = 20x + 15 represents the amount of money he can earn for a week, then how much does he get paid per hour ?
If the equation y = 20x + 15 represents the amount of money he can earn for a week, then how much does he get paid per hour ?
$20
200
What is Maki's favorite thing to do?
Running!
300
What is the slope of this line?
y = -2x - 3
y = -2x - 3
slope = -2
300
How would I graph the equation
y=2x - 4 ?
y=2x - 4 ?
Graph the y-intercept, then go up 2 and over 1 to make the next point.
300
Linear Function, Nonlinear Function, or NOT a function?
NONLinear Function
300
Your Gym membership charges 20 dollars a month, plus a fee of 10 dollar fee each time you take a kickboxing class.
Which equation below shows how your total price (y) is a function of how many classes you take (x)?
y= 20x + 10
y= 10x + 20
Which equation below shows how your total price (y) is a function of how many classes you take (x)?
y= 20x + 10
y= 10x + 20
total price = 10 x (num. of classes) + 20
y = 10x + 20
300
What state is Maki from?
South Carolina
400
What is the slope of this line?
slope = 2
400
Draw a graph for this equation.
y= -2x + 3
You may graph it any way you know how.
y= -2x + 3
You may graph it any way you know how.
400
Is this a linear function or NOT a function? How do you know?
y = x + 4
y = x + 4
LINEAR FUNCTION because it has a slope and intercept
400
Draw a graph that shows how speed is a function of time for a car driving home stuck in rush-hour traffic.
400
Name 4 places that Maki is traveling this year:
Australia, Indonesia, Malaysia, Thailand, California, Montana, Colorado, the mountains, the beach, etc.
500
On a coordinate plane, you have a point at (1,1).
You go up 3, and over 0 to get to your next point at (1,4).
What is the slope of this line?
You go up 3, and over 0 to get to your next point at (1,4).
What is the slope of this line?
Undefined, there is no slope.
500
Look at this table:
x_|_y
0 | 8
1 | 6
2 | 4
Is the slope negative, positive, zero, or undefined? How do you know?
x_|_y
0 | 8
1 | 6
2 | 4
Is the slope negative, positive, zero, or undefined? How do you know?
Negative. m = -2
500
Make a graph that shows an example of something that is NOT A FUNCTION
500
There are two cell phone plans for texting. Each one's plan can be modeled with an equation where x represents the number of texts over your monthly limit, and y is the total price.
Plan A: y = 0.25x + 17 Plan B: y = 0.15x + 25
Which plan is cheaper if you go 100 texts over your limit?
Plan A: y = 0.25x + 17 Plan B: y = 0.15x + 25
Which plan is cheaper if you go 100 texts over your limit?
Plan B
500
What is Maki's favorite food?
What is peanut butter?