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The vertex of a parabola is at (12,-4), and its axis of symmetry is vertical. One of the x-intercepts is at (18,0). What is the x-coordinate of the other x-intercept?

 Jul 9, 2021
 #1
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Because of symmetry   about  the  vertex  ....the  other  x intercept =  

 

(12 -  (18 - 12) , 0  )     =   ( 12  - 6  ,  0  )   =   (6 , 0)        

 

cool cool cool

 Jul 9, 2021

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