Question

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

Answer 1

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

Answer 2

thank you