Which functions are not one-to-one functions?

n(x) and m(x)

Step-by-step explanation:

One-one functions are the ones which have only one input for every output

All linear functions are one-one.

f and g are one-one

n is not a one-one function,

Example:

For, n(x) = 5

x = -1 or -11 (many-one)

m(x) = x⁴-x³+8x-1 is also a many-one. All even degree functions are many-one

Example m(x) = 1

x⁴-x³+8x-1 = 1

x⁴-x³+8x = 0

x(x³-x²+8) = 0 clearly has more than one x value because a cubic has atleast one root, and x=0 is also a root.

9

step-by-step explanation:

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8