Question

Which of the following represents a linear function ?
A. f(x)=3^x
B. f(x)=x^3
C. f(x)=3x^2
D. f(x)=x+3

Answer 1

the answer is B. f(x)=x^3

Answer 2

x^3 is not linear

Answer 3

f(x)=mx+b is a linear function

Answer 4

f(x)=a^x is exponential for 0<a<1 union a>1
f(x)=ax^3+bx^2+cx+d is cubic polynomial
f(x)=ax^2+bx+c is a parabola

so what do you think the answer is ?

Answer 5

the answer is d because x is a constant growth or the slope, and 3 is the initial start

Answer 6

thank you all ;)