Cost Calculations and Coordinate Geometry

This video tutorial covers constructing the coordinate plane, plotting points, choosing intervals for axes, forming a square with the origin, representing changes with numbers, calculating the cost of notebooks, and determining water usage per acre in a cornfield. It provides step-by-step instructions and examples to help students understand these mathematical concepts.

What increments were used for the axes in the coordinate plane?

• One-half

• One-fourth

• One-tenth

• One-fifth

What interval could Diego use for each axis when plotting points?

• 25

• 100

• 10

• 50

How many units to the right does Diego move for the coordinate (150, 100)?

• 5 units

• 4 units

• 2 units

• 3 units

Which of the following points would form a square with the origin at its center?

• (3, 3), (-3, 3), (-3, -3), (3, -3)

• (0, 0), (1, 1), (-1, -1), (1, -1)

• (2, 2), (-2, 2), (-2, -2), (2, -2)

• (1, 1), (-1, 1), (-1, -1), (1, -1)

What does a negative number represent in the context of a loss?

• A loss of time

• A gain of money

• A loss of points

• A gain of points

If Jada buys 10 notebooks, what is the total cost?

• $17.50

• $15.00

• $10.75

• $20.00

What is the equation for the cost of notebooks in terms of the number of notebooks?

• c = 1.25n

• c = 1.75n

• c = 2.00n

• c = 1.50n

Approximately how many gallons of water are needed per acre?

• 500,000 gallons

• 700,000 gallons

• 400,000 gallons

• 600,000 gallons

What is the simplified division used to calculate water per acre?

• 15 million divided by 30

• 15 million divided by 35

• 15 million divided by 40

• 15 million divided by 25

How many zeros are brought down in the water calculation?

• Four zeros

• Five zeros

• Three zeros

• Two zeros