The midpoint of line segment YZ is open paren negative 5 comma 3 close paren One endpoint is cap y times open paren 4 point 5 comma 13 close paren Find the coordinates of endpoint cap z

Use the midpoint formula in reverse: the endpoint coordinates add to twice the midpoint. So Z = (2(-5) - 4.5, 2(3) - 13) = (-14.5, -7). This matches choice B, (-14 and 1/2, -7).

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