Vocabulary
A letter used to represent an unknown number.
Variable
what is the equation for the table:
x y
8 3
11 6
14 9
What is y = x -5
Write the equation for: John is 2 inches taller than Paul.
What is y = x + 2
An additive relationship goes through the origin.
False
3 x 10 + 8 - 16
22
A number without a variable that does not change.
Constant
What is the equation for the table:
x y
10 1
20 2
30 3
What is y = x/10
Write the equation for: Sue has three times as much money as her sister.
What is y = 3x
A multiplicative relationship goes through the origin.
True.
25 x 3 / 5 + 9
24
Mathematical statement that shows two expressions are equivalent.
Equation
What is the equation for the table:
x y
1 6.5
2 7.5
4 9.5
What is y = x + 5.5
Write the equation for: Each pack of cards costs $2.15.
What is y = 2.15x
The independent variable is on the x-axis.
True
9 - 2 + 8 x -8
-57
Mathematical statement that shows two expressions are not equivalent.
Inequality
Write an equation for the table:
x y
2 7
3 10.5
4 14
What is y = 3.5x
A water tank loses 25 gallons of water each hour.
What is y = -25x
The dependent variable is on the x-axis.
False.
10 x 5 - (-36) + -8
78
All the values that make an inequality true.
Solution set.
Write the equation for the table:
x y
1 -7.2
-1 7.2
-2 14.4
What is y = -7.2x
What is the formula for the area of a parallelogram?
a = bh
A multiplicative relationship is proportional.
True.
-9 - (-8) + 2 x 16
31