Mrs. Apia's lesson 9 focuses on applying linear equations to solve real-world problems. Students learn to write and solve multi-step equations through exercises involving arcade games, book pages, and numerical sums. The lesson emphasizes understanding constants, variables, and coefficients, and concludes with a summary of key concepts.

What is the main purpose of this lesson on linear equations?

• To explore the history of mathematics

• To understand geometric shapes

• To practice writing and solving multi-step equations

• To learn about quadratic equations

How much did Marvin pay as an entrance fee at the arcade?

• $20

• $10

• $5

• $15

What is the variable used to represent the number of games Marvin played?

• Y

• Z

• X

• G

How many games did Marvin play if he spent a total of $26.25?

• 10

• 15

• 17

• 20

How many pages did Maria read on Monday?

• 45

• 100

• 72

• 30

What is the total number of pages in the book Maria read?

• 150

• 200

• 234

• 300

What does the term 'sum' mean in the context of Exercise 7?

• To add

• To divide

• To multiply

• To subtract

What is the value of the number in Exercise 7?

• 3

• 5

• 7

• 9

What operation is performed to isolate the variable in Exercise 7?

• Addition

• Subtraction

• Multiplication

• Division

What is the key takeaway from the lesson summary?

• Linear equations are only used in mathematics

• Linear equations are only for advanced students

• Linear equations can be applied to solve a variety of real-world problems

• Linear equations are not useful