Graph the quadratic and click the turning point. That click is the vertex. Completing the square is optional when Desmos will show it. Desmos access is in Desmos on the ACT.
Click the bump
A parabola opening up has a minimum. Opening down has a maximum. The x-coordinate of that point is the axis of symmetry. Quadratics as a set are in quadratics in Desmos.
X-intercepts are a different click, in finding x-intercepts. If the vertex is off the screen, set the window, in setting the window.
The bottom line
Graph, click the turning point, read (h, k).
Start practicing
Start with a free diagnostic, then drill your weak spots with 15-question quizzes and track how you're doing across Reading, English, and Math. Compare plans whenever you're ready to go further.
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