Unit 2 Review

Front

What is the solution to the equation 4 = 2(x + 3)?

Back

x = -1

Front

How do you solve the proportion a/b = c/d?

Back

Cross-multiply to find ad = bc.

Front

What does |x + 7| = 12 represent?

Back

It represents two equations: x + 7 = 12 and x + 7 = -12.

Front

What is the solution to the equation 10(h + 1) - 4 = 76?

Back

h = 7

Front

What is the first step in solving the equation 3x + 5 = 20?

Back

Subtract 5 from both sides to isolate the term with x.

Front

What is the definition of a proportion?

Back

A proportion is an equation that states two ratios are equal.

Front

What is the solution to the equation |x + 7| = 12?

Back

x = 5 or x = -19

Front

What does it mean to isolate a variable in an equation?

Back

To isolate a variable means to get the variable alone on one side of the equation.

Front

What is the solution to the equation 2x - 3 = 5?

Back

x = 4.

Front

What is the definition of an absolute value?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction.