Unit 4 Review

Front

What is the y-intercept of a graph?

Back

The y-intercept is the point where the graph intersects the y-axis. It is represented as (0, y).

Front

What does it mean if a system of linear equations has no solution?

Back

It means that the lines representing the equations are parallel and never intersect.

Front

What does it mean if a system of linear equations has an infinite number of solutions?

Back

It means that the lines representing the equations coincide, or are the same line.

Front

How do you find the break-even point in a cost-revenue graph?

Back

The break-even point is where the cost and revenue lines intersect, indicating no profit or loss.

Front

What is the formula for calculating total cost in a business?

Back

Total Cost = Fixed Costs + (Variable Cost per Unit × Number of Units Sold).

Front

What is a system of inequalities?

Back

A system of inequalities consists of two or more inequalities that are considered simultaneously.

Front

Back

Front

What does the slope of a line represent in a linear equation?

Back

The slope represents the rate of change of y with respect to x, indicating how steep the line is.

Front

What is the significance of the point (2, -4) in a system of equations?

Back

It is the solution to the system, meaning it satisfies both equations.

Front

How do you determine the number of solutions in a system of equations?

Back

By analyzing the graphs of the equations: one intersection point means one solution, no intersection means no solution, and overlapping lines mean infinite solutions.