manual

The reason the average did not change is that Test 2 had a

decrease of 6 points while Test 4 had an increase of 6 points.

Overall, the total points for all four tests remained the same

(330 points).

³ Problem

The table below gives the results of a braking test.

Using the relationship between these data points, estimate

the stopping distance required for a vehicle traveling at

55 kph.

A hand-drawn scatter plot of these data points suggest a

linear relationship. The TI-34 MultiView™ calculator uses the

least squares method to find the line of best fit, y'=ax'+b, for

data entered in lists.

Test No. 1 2 3 4

Speed

(kph)

33 49 65 79

Distance

(m)

5.30 14.45 20.21 38.45

v v 4

33 $ 49 $ 65 $ 79 $ " 5 8 3

$ 14 8 45 $ 20 8 21 $ 38 8

45 $

2 $ $