Released STAAR Algebra I EOC · 2025 · Item 21 · 1 point

Walkthrough: Algebra I 2025, Item 21

A.7A · Graphing Quadratics · unscored study

An upward-opening parabola on a grid from negative 10 to 10. Its lowest point is at negative 5, negative 7. Labeled points are negative 8, 2; negative 2, 2; and negative 3, negative 3. — Graph of quadratic function fOriginal visual from the released STAAR test.

The graph of quadratic function $f$ is shown on the grid. Which equation represents the axis of symmetry of the graph of $f$ ?

$x = -5$
$x = -3$
$y = -7$
$y = 2$

1. Understand the question

The axis of symmetry is the vertical line through the vertex. Find the vertex first.

Try the question on your own first, then reveal one step at a time.

2. Solve it step by step

Practice released items for this skill Back to the lesson

Question, artwork, answer key and rationale: Texas Education Agency released STAAR test. Walkthrough steps written by TEKSForge. Studying here does not change your mastery or scores.