A function is given such that f(4)−f(6)=9. If the function is linear, which of the following could the function possibly be?(1 point)

Question

Responses

f(x)=−9x+b for some constant b
.
f left parenthesis x right parenthesis equals negative 9 x plus b for some constant b.

f(x)=−4.5x+b for some constant b
.
f left parenthesis x right parenthesis equals negative 4.5 x plus b for some constant b.

f(x)=4.5x+b for some constant b
.
f left parenthesis x right parenthesis equals 4.5 x plus b for some constant b.

f(x)=9x+b for some constant b
.

Answer 1

f(x)=9x+b for some constant b.