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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?

 Jun 5, 2022
 #1
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The x-coordinate of the other x-intercept is 7.

 Jun 5, 2022
 #2
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One of the vertices is 6 units to the right of the vertex, so the other must be 6 to the left of the vertex. 

 

Can you find it from here?

 Jun 5, 2022

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