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Lesson Example Discussion Quiz: Class Homework

Quiz Discussion

Title: Two-Variable Data

Grade: 1400-a Lesson: S4-L2

Explanation: Let us discuss a few questions on this topic and review the answers to every question.

Quiz: Discussion in Class

Problem Id	Problem	Options
Steps 1	For x > 0, the function h is defined as follows: \$"h"("x") = (1/"x") + 3 \$ Which of the following could describe this function?	A) Decreasing exponential B) Decreasing linear C) Increasing exponential D) Increasing linear
Steps 2	The scatterplot shows the relationship between the length of time y, in hours, a certain bird spent in flight and the number of days after January 11, x. What is the average rate of change, in hours per day, of the length of time the bird spent in flight on January 13 to the length of time the bird spent in flight on January 15? $2$	A) \$9/2\$ B) \$11/2\$ C) \$7/2\$ D) \$13/2\$
Steps 3	The scatterplot above shows the numbers of grams of both total protein and total fat for eight sandwiches on a restaurant menu. The line of best fit for the data is also shown. According to the line of best fit, which of the following is closest to the predicted increase in total fat, in grams, for every increase of 1 gram in total protein? $3$	A) 2.5 B) 2 C) 1.5 D) 1
Steps 4	Two investments were made as shown in the table. The interest in Account A is compounded once per year. Which of the following is true about the investments? $4$	A) Account A always earns more money per year than Account B. B) Account A always earns less money per year than Account B. C) Account A earns more money per year than Account B at first but eventually earns less money per year. D) Account A earns less money per year than Account B at first but eventually earns more money per year.
Steps 5	For x > 0, which of the following is true about the values of \$4^"x"\$ and 3𝑥 + 2?	A) As x increases, the values of \$4^"x"\$ decreases exponentially. B) As x increases, the values of \$4^"x"\$ increase exponentially. C) As x decreases, the values of \$4^"x"\$ increase exponentially. D) As x decreases, the values of \$4^"x"\$ decreases exponentially.

Problem Id

Problem

Options

Steps 1

For x > 0, the function h is defined as follows: \$"h"("x") = (1/"x") + 3 \$
Which of the following could describe this function?

A) Decreasing exponential

B) Decreasing linear

C) Increasing exponential

D) Increasing linear

Steps 2

The scatterplot shows the relationship between the length of time y, in hours, a certain bird spent in flight and the number of days after January 11, x. What is the average rate of change, in hours per day, of the length of time the bird spent in flight on January 13 to the length of time the bird spent in flight on January 15?

$2$

A) \$9/2\$

B) \$11/2\$

C) \$7/2\$

D) \$13/2\$

Steps 3

The scatterplot above shows the numbers of grams of both total protein and total fat for eight sandwiches on a restaurant menu.
The line of best fit for the data is also shown.
According to the line of best fit, which of the following is closest to the predicted increase in total fat, in grams, for every increase of 1 gram in total protein?

$3$

A) 2.5

B) 2

C) 1.5

D) 1

Steps 4

Two investments were made as shown in the table.
The interest in Account A is compounded once per year.
Which of the following is true about the investments?

$4$

A) Account A always earns more money per year than Account B.

B) Account A always earns less money per year than Account B.

C) Account A earns more money per year than Account B at first but eventually earns less money per year.

D) Account A earns less money per year than Account B at first but eventually earns more money per year.

Steps 5

For x > 0, which of the following is true about the values of
\$4^"x"\$ and 3𝑥 + 2?

A) As x increases, the values of \$4^"x"\$ decreases exponentially.

B) As x increases, the values of \$4^"x"\$ increase exponentially.

C) As x decreases, the values of \$4^"x"\$ increase exponentially.

D) As x decreases, the values of \$4^"x"\$ decreases exponentially.