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14 votes
14 votes
Find the x-coordinate of the vertex of a parabola if the x-intercepts are (3,0) and
(-9,0)

User Axvm
by
2.8k points

1 Answer

26 votes
26 votes

Answer:

x = -3

Explanation:

The vertex lies on the axis of symmetry, whose x-coordinate is halfway between -9 and 3: x = -3

User Leventix
by
2.6k points