Lesson 21 Solve One Variable Equations

Front

What is a one-variable equation?

Back

A one-variable equation is an equation that contains only one variable, which can be solved to find the value of that variable.

Front

What does the equation y = 3.5x represent in a real-world context?

Back

This equation represents a situation where the total earnings (y) are directly proportional to the number of subscriptions sold (x), with each subscription earning $3.50.

Front

How do you find the number of hours worked per day if the total hours worked is given?

Back

Front

What is the first step to solve the equation 3x = -18?

Back

Front

How can you represent a situation where money is spent and a remaining amount is known?

Back

You can represent this situation with the equation: initial amount - amount spent = remaining amount.

Front

What does the equation 14h = 112 represent?

Back

This equation represents the relationship between the number of hours worked (h) and the total earnings of $112, where Martin earns $14 per hour.

Front

What is the purpose of using variables in equations?

Back

Variables are used in equations to represent unknown values that can change, allowing us to model real-world situations mathematically.

Front

How do you solve the equation x + 5.12 = 27.10?

Back

Front

What is the significance of the coefficient in an equation like 14h = 112?

Back

The coefficient (14 in this case) represents the rate of change or the amount earned per unit of the variable (hours worked).

Front

What is a constant in an equation?

Back

A constant is a fixed value that does not change, such as the $5.12 spent on a salad.