Question 1

Mr. Jones determined that the equation  $y=98-\frac{16}{5}x$  could be used to predict his students' unit test scores, based on the number of days, $x$, a student was absent during the unit. What is the meaning of the $y$-intercept of the function?
(*NO CALCULATOR*)

Accepted Answer

A student who was not absent during the unit should score about 98.

Answer

A student's test score should increase by about 3.2 points for each day the student is absent.

Answer

A student's test score should decrease by about 3.2 points for each day the student is absent.

Answer

A student who was not absent during the unit should score about 94.5.

Question 2

The value in dollars, $y$, of a car $x$ years after it was purchased can be modeled by the function $y = 14,000-875x$. What is the meaning of the $y$-intercept of the linear model?

Accepted Answer

The initial value of the car is $14,000.

Answer

The car's value decreases by $16 each year after it was purchased.

Answer

The car's value decreases by $875 each year after it was purchased.

Answer

The average value of the car is $14,000.

Question 3

The scatterplot shows the amount of sunlight some tomato plants received and the amount each plant grew.
What is the meaning of the slope of the trend line shown on the scatterplot?

Accepted Answer

A plant grows about 1 inch for every 3 hours of sunlight it receives.

Answer

A plant grows about 3 inches for every 2 hours of sunlight it receives.

Answer

A plant grows about 2 inches for every 3 hours of sunlight it receives.

Answer

A plant grows about 3 inches for every 1 hour of sunlight it receives.

Related quizzes

Related quizzes