Key Words
Table of Values
A chart showing two sets of related numbers.
You can use the ________ of the points on a graph to make a table of values.
Coordinates
Express only the blanks in your answer.
The _-axis is a _______ scale while the _-axis is a _______ scale.
x, horizontal, y, vertical
Whenever possible, choose variables that are _________. For example, ___ for height and ___ for temperature.
Meaningful, h, t
A long-distance telephone plan can be represented as D=20t where D is the cost in dollars and t is the time in minutes. To make a long distance call in Florida, the cost is $20 per minute. What is the cost for a 20 minute phone call?
A 20 minute phone call in Florida will cost you $400?!
Relationship
A pattern formed by two sets of numbers.
In order to be a linear relation, in what way do coordinates have to be arranged on a graph?
a) In a triangular shape.
b) In a straight line.
c) In a curvy line.
d) None of the Above
b) In a straight line.
Anna has $10 in quarters and dimes. What is the largest possible number of quarters she can have?
39 Quarters
Evaluate y= 7x + 3 when x represents -4. What is the value of y?
y= -25
A pair of gloves use a formula to show the cost. C= 5g + 2, where C is the cost in dollars and g is the number of pairs of gloves. Make a table to show the number of gloves purchased in relation to the total cost. Use five values for g. Graph the ordered pairs, does it show a linear relation?
Yes, the graph shows a linear relation.
To correct your table of values and chart, find the answers to 17 a) and b) from pg 359 in the answer key of the textbook.
Variable
A letter that represents an unknown number.
When is it possible to have points between the ones on the graph?
When it makes sense.
What is the difference in consecutive values below? What is the value of n?
5-3= n
7-5= n
9-7= n
11-9= n
The difference in the consecutive values is 2. The value of n is 2.
Evaluate y= 3x + 2 when x represents -2. What does the value of y represent?
y= -4
Gerald receives 500 points at an arcade when he spends $50. How many points does Gerald receive when he spends $1? Answer in a complete sentence. Make a table of values in your notebook to support your answer.
Gerald receives 10 points every time he spends $1 at the arcade.
Expression
Any single number or variable, or a combination of operations involving numbers and variables. Does not have to include an equal sign.
Express only the missing words in your response. When you describe a pattern, tell what it ______ to, where it ______, and how it ______.
Relates, starts, changes
Julienne can mix one bowl of cake batter every two minutes. How many bowls can she mix in one hour? Answer in a complete sentence.
Julienne will mix 30 bowls of cake batter in one hour.
Evaluate y= x when y= 25. What is the value of x?
x= 25
What was the ordered pair for the letter B in Mrs. Ryan’s worksheet (What Happened After the Burglar Broke Into a Tuba Factory) that was assigned at the beginning of unit 9? The worksheet can be found in content if not already completed.
(-4, 3)
Formula
A mathematical statement that represents the relationship between specific quantities.
If each step is 30cm, What is the total height of a 14-step staircase? What is the total Height of 20 Stairs? Answer in complete sentences.
The total height of a 14-step staircase is 420cm. The total height of 20 stairs is 600cm.
Ways to represent linear relations. Name five.
Graphs
Words
Ordered pairs
Expressions
Evaluate 41= 6x - 1. What is the value of x represent?
x= 7
In Mrs Ryan’s worksheet (What Happened After a Burglar Broke Into a Tuba Factory) what was the letter that was found at the coordinate (0, -3.5)?