Question

Find the vertex of this parabola:
y = -x2 - 4x - 2

Answer 1

Hello!

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In order to find the vertex of a parabola, we use the following formula:

`\bold{\displaystyle(-b)/(2a) }}`

Remember, a parabola looks like so:

`\tt{y=ax^2+bx+c}`

Now we know what a and b stand for.

In this case, b is -4, and a is -1:

`\hookrightarrow\sf{\displaystyle(-(-4))/(2(-1))`

Simplify:

`\hookrightarrow\sf{\displaystyle(4)/(-2) }}`

Divide:

`\hookrightarrow\sf{-2}`

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Notes:

• Hope everything is clear.
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`\mathbb{DiAmOnD}\\{\boxed{An~Emotional~And~Creative~Helper}}}}`