Functions
Linear?
Scatter Plots
Graphs
100
What are two ordered pairs that correspond to the function y=-4x + 6
Multiple answers include:
(-6, 30)
(-1, 10)
(0, 6)
(1, 2)
(3, -6)
100
Is the equation y=3/4x +4 linear?
Yes, because there is a constant rate: 3/4
100
The graph has a negative association.
True or False?
False. There is a positive association
100
Sketch a graph to represent the story, where y=distance and x=time:
Mr. Montalvo drives from his house for 10 minutes.
He stops at the gas station for 10 minutes.
He then drives farther from his house for 10 more minutes.
He then stops at work for 10 minutes.
200
Which represents a function?
A. y=3x+12
B. (-5,0), (-5,5), (0,0), (0, -10), (5,-10)
A
200
Does the table represent a linear relationship?
Yes, because the y increases by 3 for every 2 decreased by x. The rate is -1 1/2 or -3/2
200
Fill in the blanks. Children with ________ (shorter or taller) heights tend to weigh ________ (more or less).
Children with taller heights tend to weigh more.
Children with shorter heights tend to weigh less.
200
Fill in the blanks. Children learn a new language more slowly during __________ than during ___________.
Children learn new languages more slowly during ages 6 to 18 than during infancy to age 6.
300
Which rate of change is larger?
A.
B. 
A (1 1/2) > B (1/2)
300
Is the graph linear? Increasing or decreasing?
It is nonlinear, decreasing and increasing.
300
Choose True/False for each part.
1. The slope tells the predicted weight as the height increases
2. (72,140) is an outlier
1. True
2. False
300
Graph the equation y=4x
400
Jaylene wrote the equation y=-2x + 1/2 for the graph below. What is her mistake?
The slope of the graph is 2; the equation should be y=-2x+2
400
Explain why the graph is or is not linear:
Because of the point (-3,0), the graph is not linear.
400
What does the y intercept tell you about the songbirds when there are no cats?
The number of songbirds when there are no cats.
400
Write the equation below in the form y=mx + b
-2x - y = -5
y=-2x+5
500
Where is the function increasing and where is the function decreasing? Describe by writing "before/after x = __" or "between x=__ and x=__"
Increasing: before x=-1 and after x=5
Decreasing: between x=-1 and x=5
500
How do you know that the equation below is nonlinear?
y = 3x3 + 9
The graph will not form a straight line because of the x3 part of the equation. If it was just y=3x+9 it would be a straight line.
500
What is the slope intercept? Round to the nearest ten.
About 80 pounds
500
Graph the equation -2x - y = -5
