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anonymous
 one year ago
where is the vertex of the parabola? y=x^2+2x+3
a. above the xaxis
b. on the xaxis
c. on the yaxis
d. below the xaxis
anonymous
 one year ago
where is the vertex of the parabola? y=x^2+2x+3 a. above the xaxis b. on the xaxis c. on the yaxis d. below the xaxis

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MrNood
 one year ago
Best ResponseYou've already chosen the best response.1first you need to recognise this in the form y = ax^2+bx +c write down the values of a, b & c then you need to evaluate the expression b/2a that will give you the x ordinate of the vertex. Put that value of x into your original equation to get the value of y at the vertex from those 2 values x and y you can answer the question
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