+0  
 
0
76
1
avatar

Find the maximum value of y = 11 - 3x - x^2.

 Jun 4, 2020
 #1
avatar+107 
+1

First, we gotta write this equation in standard form.

so it is y= -x^2 -3x +11

This eqation has a negative a, we have got ourselves a max, which is at the vertex.

The vertex of this equation is ( -b/ 2a, c -b^2/ 4a). It's kind of confusing writing it here.

Plug this formula in and we get ( 3/-2, 11 -9/-4) => ( -3/2, 53/4)

We are finding the maxium for y, so the answer is 53/4.

 

idk if im right (i think i am), i only learned this recently im in 9th grade.

 Jun 4, 2020

15 Online Users

avatar
avatar