(1) According to the given value

40- 16 60-30 80-48

Draw an image of a rectangular coordinate system!

It is found that the image is close to a straight line.

It can be concluded that this function should be used once!

y=ax+b

Substitute three sets of numbers to get it.

y=4x/5- 16

(2)

The parking distance of the car after braking is 70 meters.

Represents y=70

Find x=2 15/2.

That is to say, the driving speed is 215/2 =107.5m.

The fitting function should be based on image features.

Yes, you have to deal with the function!

This requires familiarity with every function!

Require higher ability ~ ~

You should know more about the properties of function images.

You can solve this problem easily!

Come on!