Back to Explain intersection as solution — Problem 2 · Task Set 51

HSA.REI.D.11 Tutor Intake — Intersections as Solutions

This short check helps your tutor understand where to start. Answer each question without help. If you are not sure, give your best try — the goal is to find what to work on together, not to grade you.

Grade 9·7 problems·~11 min·Common Core Math - HS Algebra·standard·hsa-rei-d-11

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Concepts

A student uses graphing technology and reads an intersection point as
approximately $x = 2.3$ .

The student says: "The exact solution to the equation is $x = 2.3$ ."

Is the student correct?

Yes — the graph shows the exact value.

No — a graphical reading gives an approximation, not an exact solution.
The exact value must be confirmed algebraically.

Yes — technology graphs are always exact because they use numerical
computation.

It depends on whether the student used a graphing calculator or software.