+0  
 
0
21
1
avatar+1557 

Find the vertex of the graph of the equation y = -2x^2 + 8x + 15 - 3x^2 + 7x - 25

 Mar 2, 2024
 #1
avatar+129895 
+1

Simplify as

 

y = -5x^2 + 15x - 10

 

x coordinate of the  vertex  = (-15) / (2 * -5)  = 3/2

 

y coordinate of the  vertex  = 

 -5(3/2)^2  + 15(3/2) - 10  =  

-45/4 + 45/2 - 10 =

45/4 -10  =

5/4

 

Vertex = ( 3/2, 5/4)  = ( 1.5 1.25)

 

cool cool cool

 Mar 2, 2024

0 Online Users