+0  
 
+1
171
3
avatar+273 

This needs to be broken down to find the y-intercept 

LaughingFace  May 7, 2018
 #1
avatar+273 
+1

After graphing, I found it was -3, but how do you find that besides graphing? 

LaughingFace  May 7, 2018
 #2
avatar+91378 
+1

y  = 2 ( x + 1/4)^2  -  25/8

 

Remember.....the  y intercept point has an x value  = 0.....so...let   x  = 0....and we have

 

 

y  =2 (0 + 1/4)^2  - 25/8

 

y  = 2 (1/4)^2  - 25/8

 

y  = 2 (1/16) - 25/8

 

y  = 1/8  - 25/8

 

y   = -24/8    =   -3   ....just as you found, LF   !!!!

 

 

cool cool cool

CPhill  May 7, 2018
 #3
avatar+273 
+1

Thank you!! I get it!! 

LaughingFace  May 7, 2018

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