Mr. Dell explains how to solve a word problem using a system of equations. The problem involves determining when German's test score will catch up with Khan's. The video covers defining variables, setting up equations, and solving them using the equal values method. The solution shows that German catches up with Khan between the fourth and fifth week.

What is the main focus of the video tutorial?

• Solving quadratic equations

• Understanding linear inequalities

• Writing a system of equations to solve a word problem

• Graphing linear functions

What is Khan's initial test score?

• 650

• 750

• 700

• 800

How many points per week does German's score increase?

• 8 points

• 30 points

• 15 points

• 20 points

What is the initial score for German?

• 650

• 800

• 700

• 750

What is the initial value in the equation y = mx + b?

• m

• x

• b

• y

In the context of the problem, what does 'x' represent?

• Rate of increase

• Initial score

• Total score

• Number of weeks

What is the growth rate in the equation y = mx + b?

• x

• y

• m

• b

What does the variable 'y' represent in the context of the problem?

• Number of weeks

• Total score

• Initial score

• Rate of increase

What is the equation for Khan's score over time?

• y = 30x + 650

• y = 8x + 750

• y = 30x + 750

• y = 8x + 650

What is the equation for German's score over time?

• y = 8x + 650

• y = 30x + 650

• y = 30x + 750

• y = 8x + 750