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Equivalent Expressions

SAT Math· difficulty 3/5

Which form most easily reveals the vertex of a parabola?

  • A

    Vertex form a(x−h)2+ka(x-h)^2 + k

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  • B

    Factored form a(x−r)(x−s)a(x-r)(x-s)

  • C

    Slope-intercept form

  • D

    Standard form ax2+bx+cax^2 + bx + c

Explanation

Vertex form a(x−h)2+ka(x-h)^2 + k directly shows vertex (h,k)(h, k).

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