Question

8. The scatter plot shows a hiker's elevation above

sea level over time. The equation of the trend

line shown is y = 8.77x + 686. To the nearest

whole number, predict what the hiker's elevation

will be after 145 minutes.

Answer 1

The hiker's elevation after 145 minutes will be 1958 meters.

Explanation:

The equation of the trend line of the scatter plot showing a hiker's elevation is y = 8.77x + 686 .......... (1), where x is in minutes (say) and y is in meters (say).

Now, we have to predict the hiker's elevation after 145 minutes.

So, from equation (1) we get, y = 8.77 × 145 + 686 = 1957.65 ≈ 1958 meters. (Answer)