LESSON 7.2.10 DESMOS NOTES

WARM-UP: Consider the equation y = 2.5(x).

Select the best answer from the choices below.

• PROPORTIONAL

• NOT PROPORTIONAL

• NEITHER

• BOTH

WARM-UP: Consider the equation t = 2.5(w) + 18.

Select the best answer from the choices below.

• PROPORTIONAL

• NOT PROPORTIONAL

• NEITHER

• BOTH

WARM-UP:

This graph shows the cost in dollars, `C`, of `w` pounds of strawberries. The relationship is proportional.

Select all of the true statements.

• 4 pounds of strawberries cost $13

• 1 pound of strawberries costs $3.25.

• 3.25 pounds cost $1.

• The point (3, 10) is on the graphed line.

• 10 pounds cost $32.

WARM-UP:

Lee King has hit 18 HR's in 40 baseball games. What number represents Lee's HR's per game? Round your answer to the nearest hundredth if necessary. Enter only the number of your answer.

____________ HR PER GAME

Lee King has hit 18 HR's in 40 baseball games. What number represents Lee's games per HR ? Round your answer to the nearest tenth. Enter only the number of your answer.

____________ games per HR

Two turtles went for a walk. They each walked a distance, d , after t seconds.

Turtle A’s walk is represented in the graph. Write an equation for this relationship.

• t=.4(d)

• d=.4(t)

• d=2.5(t)

• t=2.5(d)

Explain how you know the equation d = 1/3(t) matches the graph.

Tags

CCSS.8.EE.B.5

Turtle B’s walk is represented by the equation d = 2t . Which turtle walked faster?

(EXPLAIN HOW YOU KNOW--YOU WILL BE ABLE TO RECORD A RESPONSE UP TO 1 MINUTE LONG!)