Understanding equations and solutions

Front

A letter used to represent a number value in an equation

Back

Variable

Front

Tell which value of the variable, if any, is a solution of the equation: 2y = 30. Options: y= 10, 12, 24

Back

No solution is given

Front

Solve for c: c/2 = -14

Back

c = -28

Front

In the expression 8r − 3, the VARIABLE is ___

Back

r

Front

Which equation has x=9 as a solution? Options: 4 + x = 12, 5x = 45, 2x = 20, x + 7 = 26

Back

5x = 45

Front

What is an equation?

Back

A mathematical statement that asserts the equality of two expressions.

Front

What is a solution to an equation?

Back

A value that makes the equation true when substituted for the variable.

Front

What does it mean to isolate a variable?

Back

To manipulate an equation to get the variable on one side and the constants on the other.

Front

What is a coefficient?

Back

A numerical factor in a term of an algebraic expression.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign, while an equation does.