Identifying the Y intercept from a Graph

Identifying the Y intercept from a Function Rule If y = 3x + 5, the y intercept is 5 because when x = 0, y = 3(0) + 5 = 5. If y = 7x^{2} + 5x 3, the y intercept is 3 because when x = 0, y = 7(0) + 5(0)3 = 3. If y = 2^{x} +4, the y intercept is 4 because when x = 0, 2^{0} + 3 =4. Important Fact: For all the polynomial functions, the y intercept is the constant term.

CONCEPT CHECK: The y intercept of the function: x^{3} +5x  9 is: