Substituting Variables

Front

What is substituting a variable?

Back

Substituting a variable means replacing a variable in an expression or equation with a specific value.

Front

What does the equation x + 12 = 17 represent?

Back

It represents a linear equation where x is a variable that can be solved to find its value.

Front

If h = 2 in the expression 5h, what is the new expression?

Back

5(2) or 10.

Front

How do you evaluate an expression with substituted variables?

Back

Replace each variable with its corresponding value and then perform the arithmetic operations.

Front

What is the value of x in the equation x + 12 = 17?

Back

5.

Front

If m = 8, n = 6, p = 4, and q = 2, what is n + q - p?

Back

4.

Front

What is the result of 5 + x + 2x when x = 1?

Back

8.

Front

If b = 3 in the expression 4 + 6b, what is the value?

Back

22.

Front

What is the first step in solving an equation?

Back

Identify the variable and isolate it on one side of the equation.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with numbers.