Linear Expressions

What is a linear expression?

• An expression that includes only constants.
• An expression that can be written in the form ax + b.
• An expression that contains only variables.
• An expression that cannot be simplified.

Which of the following expressions is a linear expression?

• sqrt(x) + 5
• 2/x + 1
• x^3 - 4
• 3x + 2

What is the coefficient in the expression 7x - 4?

• 7
• x
• -4
• -7

Which part of the expression 5x + 3 is the coefficient?

• 5
• 5x
• x
• 3

When adding the expressions 2x + 4 and 3x - 1, what is the combined coefficient of x?

• 6
• 5
• 7
• 4

If you subtract the expression (4x + 1) from (9x - 3), what is the resulting expression?

• 5x - 2
• 5x + 4
• 5x + 2
• 5x - 4

What is the greatest common factor (GCF) of the expression 12x + 18?

• 18
• 12
• 3
• 6

When expanding the expression 5(x - 3), what is the result?

• 15x + 5
• 15x - 5
• 5x + 15
• 5x - 15

What is the result of adding the expressions 3x + 5 and 2x - 3?

• 5x + 2
• 5x + 8
• 6x + 2
• 6x + 8

Why is it important to combine like terms when adding linear expressions?

• To eliminate variables.
• To make the expression longer.
• To simplify the expression.
• To change the coefficients.