Unit 3 Review

Front

How do you solve the equation: 9x = 153?

Back

Divide by 9 on both sides.

Front

What is the solution to the equation x + 1 = 0?

Back

(-1, 1)

Front

What is the slope in the equation: y = 4x + 3?

Back

4

Front

Solve for x in the equation: 17 = x + 3.

Back

x = 14

Front

Solve for x: 2x + 4 = 24.

Back

x = 10

Front

What is the definition of a linear equation?

Back

An equation that makes a straight line when graphed.

Front

What is the formula for the slope of a line?

Back

Slope (m) = (y2 - y1) / (x2 - x1).

Front

What does it mean for two lines to be parallel?

Back

They have the same slope and will never intersect.

Front

What is the y-intercept in the equation: y = 2x + 5?

Back

5

Front

How do you isolate a variable in an equation?

Back

Perform inverse operations to get the variable alone on one side.