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NL, PC, AZ, EM
WA, TL, TJ, AJT, CS
100
Name the variable: 2 + a
a
100
What is a variable? Give an example.
A letter representing a number. For example, 2x (x is the variable).
200
Name the variables: 2a + b
a and b
200
Name the variables: 2x + 4y
x and y
300
What is 1 + x if x=3?
4
300
What is 3x if x=3?
9
400
What is 2x if x=2?
4
400
What is x + y if x=0 and y=8?
8
500
What is x + y if x=1 and y=5?
6
500
What is 7x + y if x=2 and y=1?
15