what are true about the graph of y x^2 + 4x + 4?

1. The parabola opens up.
2. The line of symmetry is y = -2.
(or both?)

Question

what are true about the graph of y > x^2 + 4x + 4?

1. The parabola opens up.
2. The line of symmetry is y = -2.
(or both?)

anonymous · Answer

I think it is y= not y>

anonymous · Answer

no, thats the right question..

anonymous · Answer

I dont think it is a parabola then

anonymous · Answer

so theyre both not true?

anonymous · Answer

It's a parabola. You just have an inequality. The inequality is irrelevant when it comes to just describing the shape. It's relevant in the solution set.

anonymous · Answer

The dominant term (the quadratic or ^2 term) is not negative, so it will open up.

waleed_imtiaz · Answer

The first option is true that the parabola will open upwards...... and  I am not confirm with the second.

anonymous · Answer

The line of symmetry will be about the vertex given by:
$$-b/2a$$

anonymous · Answer

Just be careful about how they're wording it,    y = -2 or x = -2  ;)

anonymous · Answer

hmm so the second one is true?

anonymous · Answer

Here b = 4 (the linear term), a = 1 (the quadratic term) by -b/2a we have -4/(2 * 1) = -2
|dw:1344066706292:dw|