Point D(-1, 5) is reflected across the x-axis. Which statements about D' are true?
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The turning point of a parabola is its vertex.
The vertex is
The vertex is
as you notice above, is the first-row components from A, multiplying all the columns subsequently on B, and you add the products of that row, that gives you one component on the AB matrix
in the one above, we end up with a 2x3 AB matrix