7th Grade Ch. 3 Flashcard

Front

What is the solution to the equation -3 + 2x = -1?

Back

x = 1

Front

How do you solve for x in the equation \( \frac{x}{3} = 9 \)?

Back

x = 27

Front

What is the solution to the equation 30 = -6X?

Back

X = -5

Front

What is the equation to determine the total cost, c, of a phone call that is m minutes long if the charge is $3.00 plus $0.15 per minute?

Back

c = 3.00 + 0.15m

Front

What is the solution to the equation x - 8 = -5?

Back

x = 3

Front

What is the first step to solve the equation 2x + 3 = 11?

Back

Subtract 3 from both sides to get 2x = 8.

Front

What is the definition of a variable in algebra?

Back

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

Front

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

Back

To manipulate the equation so that the variable is on one side and all other terms are on the other side.

Front

What is the solution to the equation 4x - 5 = 11?

Back

x = 4.

Front

What is the definition of a linear equation?

Back

An equation that makes a straight line when graphed, typically in the form y = mx + b.