Where is the vertex of the parabola? y = x2 + 2x - 3 a. above the x-axis b. below the x-axis c. on the x-axis d. on the y-axis

The equation for this parabola is in standard form: y = ax² + bx + c

a, b, and c stand for coefficients. In standard form, in order to find the x-coordinate of the vertex of the parabola, plug in the associated variables in the expression " - (b/2a) ".

Plugging in the values for a and b gives:

- (2/2*1)

- (2/2)

-1

x = - 1

From here, by plugging this value of x in for a corresponding answer, one can find the location of the vertex.

y = (-1) ² + 2 (-1) - 3

y = 1 + - 2 - 3

y = 1 - 2 - 3

y = - 4

Vertex of the parabola: (-1,-4)

Because y is negative, the answer is B) below the x-axis.