Question

Can someone help me answer this.

Answer 1

`f(n)=-3n+24`

Explanation:

A=(1,21)

B=(3,15)

slope:- Δy/Δx=21-15/1-3=6/-2= -3

Equation:-

y-y1=m(x-x1)

y-21=-3(x-1)

⇒y=-21=-3n+3

→ y= -3n+3

y= -3n+24

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hope it helps..

have a great day!!