`This time, I want to CHECK my answer with you smart people.`

Consider the parabola \(y=-5x^2+17x-12\) . What is the vertex of this parabola?

Enter your answer as a coordinate pair, that is, as \((x,y)\) where \(x\) and \(y\) are replaced by numbers.

\(Axis\ of\ symetry\ (x\ value) \\=\frac{-b}{2a} \\=\frac{-17}{-10} \\=\frac{17}{10} \\=1.7\)

\(Plugging\ it\ in\ (y\ value) \\-5(1.7)^2+17(1.7)-12 \\-5(2.89)+17(1.7)-12 \\-14.45+28.9-12 \\-14.45+16.9 \\+2.45\)

\(Answer: \\(1.7,2.45)\)

`Therefore, I think that the answer is (1.7,2.45)`

-\(tommarvoloriddle \)

EDIT: If I did somehow get it right, post an emoji (or something) please in the answer section... If I got it wrong ( probably ) just say I got it wrong, why, and how I should do it next time.

tommarvoloriddle Jul 14, 2019

edited by
tommarvoloriddle
Jul 14, 2019

edited by tommarvoloriddle Jul 14, 2019

edited by tommarvoloriddle Jul 14, 2019

edited by tommarvoloriddle Jul 14, 2019

edited by tommarvoloriddle Jul 14, 2019

#1**+5 **

You're exactly right!! 👍 🤪 🙌

And you can always check your answer to these type of questions with a graphing calculator such as desmos.

hectictar Jul 14, 2019

#4**-1 **

Same here- the only problem is that I have no idea how to save...

:(

tommarvoloriddle
Jul 14, 2019

#7

#8**-1 **

Isn't it amigo travis?

I am calling you travis now.

jlyk

Just letting you know=jlyk

tommarvoloriddle
Jul 15, 2019