Problem preview
F-IF.7.b Warmup M3-024-A03-V01

Graph square-root, cube-root, absolute-value, step, and piecewise-defined functions.

Graph an absolute-value function from vertex and arm fields

Problem

Analyze \(y~=~|x~-~3|~+~2\). State \(a\), \(h\), and \(k\); give the vertex, opening, left and right arm slopes, and range; and list symmetric anchors \(\text{one}\) and \(\text{two}~\text{units}\) from the vertex.

Big Picture

What this problem is really about

Treat the absolute-value equation as vertex form first: the horizontal and vertical shifts locate the corner before any other points are plotted. Then use the coefficient’s sign to set the opening and its magnitude to set the arm slopes. A pair of symmetric anchor points is a quick check that the whole V has been transformed consistently.

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Four variants of this problem type
Curriculum context
Course
Math III
Standard
F-IF.7.b
Category
Functions
Domain
Interpreting Functions
Objective
Graph square-root, cube-root, absolute-value, step, and piecewise-defined functions.
Problem type
Graph an absolute-value function from vertex and arm fields