Question

The scatterplot shows the number of beach visitors and the average daily temperature. Based on the scatterplot, what is the best prediction of the number of beach visitors if the average daily temperature is 88°F? A) 275 B) 350 C) 425 D) 500

Answer 1

Answer:

Option B (350) is the correct answer.

Explanation:

Given:

The temperature is "88°F" i.e., x.

Let number of visitors be "y".

Let the two points will be:

84,225 = (x₁, y₁)

92, 450 = (x₂, y₂)

As we know,

⇒  $y-y_{1}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}(x-x_{1})$

On substituting the values, we get

⇒  $y-225=\frac{450-225}{92-84}(88-84)$

⇒  $y=337.5$

So that alternative B is the appropriate choice.