Writing Equations from Tables: Understanding Variable Relationships

What is usually the independent variable in a table representing the relationship between two variables?

• x

• y

• z

• w

In the first example, what is the relationship between x and y?

• y = x * 2

• y = x - 2

• y = x + 2

• y = x / 2

If x is 9 in the first example, what is the value of y?

• 7

• 9

• 11

• 5

In the second example, what operation is used to find y from x?

• Subtraction

• Division

• Multiplication

• Addition

If x is 4 in the second example, what is the value of y?

• 6

• 12

• 8

• 10

In the third example, what operation is used to find y from x?

• Addition

• Division

• Subtraction

• Multiplication

If x is 25 in the third example, what is the value of y?

• 20

• 15

• 10

• 5

In the fourth example, what is the first step to find y from x?

• Add 3

• Multiply by 4

• Subtract 2

• Divide by 5

In the fourth example, what is the second step to find y from x?

• Multiply by 4

• Add 3

• Subtract 2

• Divide by 5

If x is 3 in the fourth example, what is the value of y?

• 12

• 18

• 9

• 15