Easy Medal

Question

Easy Medal

anonymous · Answer

Where is the location of the vertex of the parabola on a coordinate grid?

y = x^2 + 2x + 3


A. Above the x-axis

B. On the y-axis

C. Below the x-axis

D. On the x-axis

mathmale · Answer

Hint:  Compare the given equation, y = x^2 + 2x + 3, to the "vertex form" of the equation of a parabola:                              y=(x-h)^2 + k, or
                                                   y-k=(x-h)^2,
or (in this specific case):                 y=(x-0)^2 + 3

Can you identify the coordinates of the vertex of y = x^2 + 2x + 3 from this information?

dinamix · Answer

$$y= x^2+2x+1+2 = (x+1)^2+2$$ and we have $$y=x^2$$ draw cuz its basic |dw:1458737343156:dw|