Algebra 1 - Writing Quadratic Equations
Updated: Nov 18, 2025
This post explains and gives practice opportunities related to TEKS A.6B:
write equations of quadratic functions given the vertex and another point on the graph, write the equation in vertex form (f(x) = a(x - h)2 + k), and rewrite the equation from vertex form to standard form (f(x) = ax2 + bx + c)
Instruction
Students write quadratic equations in the standard form and the vertex form, moving from one form to the other or starting with the vertex and a point.
STAAR Practice
Between 2016 and 2025 (including redesign practice), this supporting standard has been tested 7 times on the STAAR test. Videos explaining the problems can be found below. If you'd rather take a quiz over these questions, click here. The videos below are linked to the questions in the quiz as answer explanations after the quiz is submitted.
To view all the posts in this Algebra 1 TEKS review series, click here.
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