Question 1047075
f(x) = 2x2 - 2x


You mean to say,  f(x) = 2x^2 - 2x


which will become rendered as  {{{f(x)=2x^2-2x}}}.



Is the coefficient on the leading term positive, or is it negative?  Vertex minimum if this coefficient is positive.



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So you have your answer.
 {{{f(x)=highlight_green(2)x^2-2x}}}-------you know the lead coefficient is positive.  The reference model parabola equation is {{{y=x^2=1*x^2}}}, and you already know what this looks like graphed:
{{{graph(300,300,-6,6,-6,6,x^2)}}}
and what if the lead coefficient were 2 instead of 1, still positive?
{{{graph(300,300,-6,6,-6,6,2x^2)}}}