Interpreting Equations

Interpreting Equations

Let's try one together!

​Suppose that there are some chairs in a room and that each chair has 4 legs.

x = the number of chairs

y = the total number of legs on all the chairs

Multiple Select

Suppose that there are some tricycles in a room and that each tricycle has 3 wheels.

x = the number of tricycles

y = the total number of wheels on all the tricycles

• x = 3y

• y = 3x

• x = $$\frac{y}{3}$$

• y = $$\frac{x}{3}$$

​Suppose that Max buys some pens and erasers.
The cost of a pen in dollars is x and
the cost of an eraser in dollars is y.

p = the number of pens he buys.
e = the number of erasers he buys.

The following two equations are true. What is the meaning of each equation in words.

p = 2e x = 2y

Match

Match the following

• y=2x

• b=2a

• b + a = 5

• b=2

• x=y

Bananas cost twice as much as apples.

I bought twice as many bananas as apples

Altogether I bought 5 apples and bananas

I bought 2 bananas

apples and bananas cost the same

• Bananas cost twice as much as apples.

• I bought twice as many bananas as apples

• Altogether I bought 5 apples and bananas

• I bought 2 bananas

• apples and bananas cost the same