Slopes and Intercepts
Tables and Graphing
Functions?
Real - Life functions
Grab-bag
100
What is the y-intercept of this graph?
1
100
Complete this table Table for the function: y = 4x - 3
x_|_y
0 | _
1 | _
2 | _
x_|_y
0 | _
1 | _
2 | _
-3, 1, 5
100
Linear Function, Nonlinear Function, or NOT a function?
NONLINEAR Function
100
Ali works at Awty Plus 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 ?
Amount of money $$$
100
y = 10x - 13
What is the y-intercept for this function equation?
-13
(NEGATIVE!)
200
Is the slope positive or negative?
Positive Slope
200
Complete this table Table for the function: y = -2x + 3
x_|_y
-2 | _
0 | _
2 | _
What is 7, 3, -1
200
What is the name of the method used to determine whether a graph is a function or not?
Vertical Line Test
200
Fahd works at Toys r Us 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 ?
$20
200
When graphing an equation that is in slope-intercept form,
(y=mx+b), where do you start?
With the b (y-intercept)
300
What is the slope of this line?
y = -x - 3
slope = -1
300
If you have an equation written in standard form
like this:
2x + 6y = 12
How should you set up a table to quickly figure out
how to graph this equation?
Plug in a zero for x
and plug in a zero for y.
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.
Write an equation for to show how your total price (y) is a function of how many classes you take (x).
total price = 10 x (num. of classes) + 20
y = 10x + 20
300
Your weight is a function of how many bags of cheetos you eat.
Which is the independent variable?
How many bags of cheetos you eat.
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.
400
Linear Function, Nonlinear Function, or NOT a function?
2x - 3y = 18
LINEAR FUNCTION
400
Draw a graph that realistically shows how distance is a function of time for a car driving home stuck in rush-hour traffic.
400
A candle is burning. The height of the candle
is a function of the time the candle spends burning.
Is the slope of this function positive, negative, zero, or undefined?
NEGATIVE
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?
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?
Negative. m = -2
500
Make a table that shows an example of something that is NOT A FUNCTION
show me
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 limit, and y is the total price.
Plan A: y = 0.25x + 17 Plan B: y = 0.15x + 25
Plan B is cheaper BY HOW MUCH if you go 100 texts over your limit?
$2.00
500
Write an equation and draw a graph that shows how money is a function of time(hours)
for somebody babysitting, if they get paid a flat $50 for the
evening.
y=50
horizontalline
