Sem1 Exam Review Day 2 - Ch 4,5,6 Equations,Inequalities(Math 8)

Front

What is the first step to isolate x in the equation: 15 = x - 6?

Back

Add 6 to both sides.

Front

What is the result of dividing 4 x 10^20 by 10^14?

Back

4 x 10^6.

Front

What is the first step to solve the equation: 1 + 4n - 6n = 1 - 8n?

Back

Combine the like terms 4n + -6n.

Front

What does it mean when an equation has one solution?

Back

Only ONE solution will make the equation true.

Front

What does it mean when an equation has no solution?

Back

The equation will NEVER be true no matter what value is substituted in for the variable.

Front

What is an equation?

Back

A mathematical statement that asserts the equality of two expressions.

Front

What is an inequality?

Back

A mathematical statement that compares two expressions and shows that one is greater than, less than, or not equal to the other.

Front

How do you solve a one-step equation?

Back

Perform the inverse operation to isolate the variable.

Front

What is the inverse operation of addition?

Back

Subtraction.

Front

What is the inverse operation of multiplication?

Back

Division.