Question

Please help me and my daughter

Answer 1

Linear

Explanation:

The hypothese is the function is linear. Lets prove it .

If we divide the difference of 2 any function's values by the difference of the corresponding argument's values we will get the same ratio 0.48(for instance 19.210-18.250=0.96 delete be 2-0=2 will get 0.48) .

Lets calculate any other pair of y (function) and x ( argument) :

(20.170-18.730)/(4-1)=1.44/3=48 as we can see we'll get the same ratio 0.48.

That means that function is linear

Answer 2

a. Linear

Explanation:

The difference is equal between y- values (0.480)

So it is linear change and linear function