Unit 4: 4-7 REVIEW

Front

Evaluate the expression: | x + 9 | = -5

Back

No solution. Absolute values cannot be negative.

Front

What is the solution to the system? (1, -1), (-1, 1), (0, -2), (0, 1)

Back

(1, -1) is the correct solution.

Front

How many solutions does the equation 3x - 4 = 2x + 7 have?

Back

One solution.

Front

Solve for x: -7x - 11 = 3

Back

x = -2.

Front

Solve the inequality: 2x + 5 < 3x - 6

Back

x > 11.

Front

What is an absolute value?

Back

The distance of a number from zero on the number line, always non-negative.

Front

What does it mean if an equation has no solution?

Back

It means there are no values for the variable that satisfy the equation.

Front

What is a linear equation?

Back

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

Front

What is the solution set?

Back

The set of all possible solutions to an equation or inequality.

Front

What is the difference between an equation and an inequality?

Back

An equation states that two expressions are equal, while an inequality shows that one expression is greater or less than another.