In: Advanced Math
The y-intercept is (0, 0). The x-intercepts are (0, 0), (2, 0). Degree is 3. End behavior: as x → −∞, f(x) → −∞, as x → ∞, f(x) → ∞.
Consider a polynomial function of degree 3 and having following x-intercepts and y-intercepts respectively,
(0, 0) → y-intercept
(0, 0), (2, 0) → x-intercepts
End behavior of the polynomial function is,
x → ∞, f(x) → ∞
x → -∞, f(x) → -∞
The end behavior shows that the graph is upwards. This means take the leading coefficient 1.
Consider the following general form of a polynomial function of degree 3.
f(x) = a(x – 0)(x – 2)2
= x(x2 – 4x + 4)
f(x) = x3 – 4x2 + 4x
Hence, the polynomial function is f(x) = x3 – 4x2 + 4x.
Hence, the polynomial function is f(x) = x3 – 4x2 + 4x.