Unit 4: Bring it On!

Front

What does the symbol ≤ represent?

Back

The symbol ≤ means 'less than or equal to.' It indicates that a value can be either less than or equal to another value.

Front

Use the equation y = kx to find x when k = 0.5 and y = 20. What is x?

Back

x = 40

Front

If a song download costs $2.89, how would you represent the total cost of buying 14 songs?

Back

y = 2.89(14)

Front

Cally bought 3 bows for a total of $18. Write the equation that represents the cost per bow.

Back

18 = k(3), where k is the cost per bow.

Front

Solve for x in the equation 3.8x = 27.74. What is x?

Back

x = 7.3

Front

What is the definition of a variable in mathematics?

Back

A variable is a symbol, often a letter, that represents a number in mathematical expressions or equations.

Front

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

Back

It represents a direct variation where y is directly proportional to x, with k being the constant of proportionality.

Front

What is the purpose of using equations in problem-solving?

Back

Equations help to represent relationships between quantities and can be used to find unknown values.

Front

How do you isolate a variable in an equation?

Back

To isolate a variable, you perform inverse operations to get the variable alone on one side of the equation.

Front

What does it mean to solve an equation?

Back

To solve an equation means to find the value(s) of the variable(s) that make the equation true.