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For all functions of the form f(x) = ax2 + bx + c, which is true when b = 0?

A.The graph will always have zero x-intercepts.
B.The function will always have a minimum.
C. The y-intercept will always be the vertex.
D. The axis of symmetry will always be positive.

Question

Wanna medal (¬‿¬) then please answer

For all functions of the form f(x) = ax2 + bx + c, which is true when b = 0?

A.The graph will always have zero x-intercepts.
B.The function will always have a minimum.
C. The y-intercept will always be the vertex. 
D. The axis of symmetry will always be positive.

mathmale · Answer

Try it.  Let b = 0.  What does your function look like now?  Show your work, please.

mathmale · Answer

Write out $$ f(x) = ax^2 + bx + c$$

mathmale · Answer

Next, let b=0.
What does the equation look like now?

boldjon · Answer

$$f(x)=ax2+0+c$$