identify a quadratic function that fits the points (−1, , 4), and (3, 13).
f(x) = 3x^2 − 2x − 4
f(x) = 2x^2 + 3x − 4
f(x) = 2x^2 − 3x + 4

f(x) = 2x² − 3x + 4

Step-by-step explanation:

View Image.

Graph all the equations and checked if the points are on there or not.

I'm assuming you know how to use a graphing calculator. If not just ask and I can clarify more.

step-by-step explanation:

y=mx+b

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18