Select all relations that represent a function. {(–5, 4),(–4, 3),(–3, 2),(–2, 1)} {(3, 11),(–4, 5),(3, –1),(0, 0)} {(5, 7),(2, 7),(9, 7),(8, 0)} {(0, 0),(–1, 3),(–1, –1),(0, 5)} {(8, 0),(1, 4),(9, 4),(7, 8)} {(–4, 3),(–2, 4),(0, 1),(–4, –1)}

Let from the height at which ball was thrown = h units

It is given that , ball rebounds the same percentage on each bounce.

Let it rebounds by k % after each bounce.

Height that ball attains after thrown from height h(on 1 st bounce)=

Height that ball attains after thrown from height h (on 2 n d bounce)=

Similarly, the pattern will form geometric sequence.

S=

So, Common Ratio =

Common Ratio= 1 + the percentage by which ball rebounds after each bounce

the percentage by which ball rebounds after each bounce= negative integer= k is negative integer.