Speed, Temperature, and Money Problems

This video tutorial covers Unit 7, Lesson 11 on points on the coordinate plane. It begins with an introduction to plotting points on a coordinate plane, explaining how to move along the x-axis and y-axis. The tutorial then demonstrates how to write coordinates for points on a graph and form a horizontal line with given points. It includes a problem-solving section on temperature differences using a number line and a practical example of calculating money from chocolate box sales. Finally, it calculates Lynn's running speed and distance, providing a comprehensive understanding of these mathematical concepts.

What is the coordinate of a point that is 2 units to the left and 3 units up from the origin?

• (2, -3)

• (-2, 3)

• (2, 3)

• (-2, -3)

If a point is located directly on the x-axis at 1 unit from the origin, what are its coordinates?

• (0, -1)

• (1, 0)

• (0, 1)

• (-1, 0)

Which of the following points lies on the horizontal line formed by the points (-3.5, 4), (0, 4), and (6.2, 4)?

• (3, 5)

• (3, 4)

• (3, 3)

• (3, 6)

If Tucson is 24 degrees warmer than Minneapolis and their temperatures are opposites, what is the temperature in Tucson?

• 0°C

• 12°C

• 24°C

• -12°C

How much money is collected if 3 boxes of chocolate bars are sold, each containing 20 bars at $1.50 per bar?

• $90

• $60

• $45

• $120

What is the equation for the amount of money collected (m) if b boxes are sold?

• m = 20b

• m = 30b

• m = 40b

• m = 50b

If 240 dollars were collected, how many boxes of chocolate were sold?

• 9

• 8

• 7

• 6

What is the speed of Lynn if she runs 29 meters in 10 seconds?

• 3.1 m/s

• 2.8 m/s

• 3.0 m/s

• 2.9 m/s

At Lynn's running speed, how far can she run in one minute?

• 150 meters

• 174 meters

• 180 meters

• 160 meters

Which variable is dependent in the equation m = 30b?

• b

• 30

• None

• m