Linear Expressions, Equations, & Inequalities Interim Review

Front

What is a linear expression?

Back

A linear expression is an algebraic expression in which each term is either a constant or the product of a constant and a single variable raised to the first power.

Front

What is the solution type when an equation simplifies to a false statement, such as 0 = -2?

Back

No Solution

Front

What is the solution type when an equation simplifies to a true statement, such as -4 = -4?

Back

Infinite Solutions

Front

How do you solve the equation 10x - 6x = 23 + 5 for x?

Back

Combine like terms: 4x = 28, then x = 7.

Front

What is the formula for Ohm's Law?

Back

IR = V, where I is current, R is resistance, and V is voltage.

Front

How do you isolate R in the equation IR = V?

Back

R = \frac{V}{I}.

Front

What is the process to solve for a variable in an equation?

Back

Use inverse operations to isolate the variable on one side of the equation.

Front

What does it mean if an equation has one solution?

Back

It means there is exactly one value for the variable that satisfies the equation.

Front

What is the first step in solving the equation -2 = 4r + s for s?

Back

Subtract 4r from both sides to isolate s.

Front

What is the solution for s in the equation -2 = 4r + s?

Back

s = -4r - 2.