Writing Equations from Real-Life Word Problems

The video tutorial focuses on writing equations and solving them, starting with a warm-up exercise. It then moves to real-world applications, explaining how to relate variables in equations. The concept of independent and dependent variables is introduced, with examples to illustrate their roles. The video concludes with practice problems, encouraging students to apply what they've learned and check their solutions.

What should you do before starting the warm-up exercise?

• Ask a friend for help

• Read a textbook

• Watch the entire video

• Get your notebook and pencil

What is the equation for the expression 'seven is the quotient of X and four'?

• 7 = X * 4

• 7 = X + 4

• 7 = X - 4

• 7 = X / 4

If the total of X and 12 is 32, what is the value of X?

• 44

• 20

• 32

• 12

In the problem involving Caleb and his sister, what is the equation that relates their ages?

• Y = X - 10

• Y = X + 10

• X = Y + 10

• X = Y - 10

Which variable is independent in the problem involving Caleb and his sister?

• Y

• X

• Both X and Y

• Neither X nor Y

How do you find the perimeter of a square with side length R?

• P = R^2

• P = 2R

• P = 4R

• P = 3R

If Miguel has K baseball cards and Isaiah has H baseball cards, what is the equation for K in terms of H?

• K = H / 7

• K = H + 7

• K = H - 7

• K = H * 7

What is the equation for the total number of marbles C if Nathan has 7 boxes with B marbles each?

• C = 7 + B

• C = 7 - B

• C = 7 / B

• C = 7 * B

If Mr. Kim stayed at a motel for 12 nights and the total cost is X dollars, what is the equation for the rate per night Y?

• Y = X * 12

• Y = X / 12

• Y = X + 12

• Y = X - 12

If a bouquet of tulips costs N dollars and it is M dollars less than a bouquet of roses that costs 30 dollars, what is the equation for N?

• N = 30 - M

• N = 30 / M

• N = 30 * M

• N = 30 + M