OpenStudy (anonymous):

where is the vertex of the parabola? y=x^2+2x+3 a. above the x-axis b. on the x-axis c. on the y-axis d. below the x-axis

2 years ago
OpenStudy (mrnood):

first 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

2 years ago
OpenStudy (anonymous):

thank you

2 years ago
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