(-5,6) is the vertex.
I did this by using the vertex x coordinate Formula which is -b/2a
So in this case a=3 b=30 c=81
So if put the number in it would be
-30/2(3) = -30/6 = -5
Now that we know the x coordinate of the vertex which is -5. You plug the x of -5 into the quadratic equation to get the y.
3(-5)^2 + 30(-5) + 81=y
Simplify it
75-150+81= Y
Combine the light terms
6=y
So the coordinate points are (-5,6)
Answer:
I feel like my answer is wrong but all of them are false
first one: it's between 0 and 5
second one: it's between 5 and 10
third one: it's between 10 and 15
but you could also say that they are all true because between the numbers they gave, they are doing what they said
<em>Hope this helps</em>
The range (y) of the function is from negative infinity to infinity. According to the options I think it's A, all real numbers.
Answer: A
//Hope it helps.
La medida de un ángulo exterior de un triángulo es igual a la suma de las medidas de los dos ángulos interiores no adyacentes del triángulo.
