Input-output relationship
A function maps each allowed input to one output. Formula, table, and graph are different representations of the same relationship.
Greek Gymnasium Grade 2 / Mathematics / Μέρος Α: Άλγεβρα
Συναρτήσεις: structured theory, worked examples, answered practice, and a mastery checklist for Greek Gymnasium Grade 2.
Unit
The essential chapter ideas in a clear sequence before practice.
A function maps each allowed input to one output. Formula, table, and graph are different representations of the same relationship.
Parameters change slope, position, amplitude, or rate of change. Read the key features before plotting individual points.
The domain states which inputs are allowed. In a real model, also check whether the output is physically meaningful.
Mathematics
Follow the method step by step and check why every step is valid.
For f(x) = 5x - 5, find f(4) and the x-intercept.
Mathematics
The goal is to connect equations, word problems, and graphs without mechanical memorisation.
The structure follows the official textbook layout and is used to organise study.
The areas that usually create mistakes or need extra revision.
f(4) = 15, x-intercept = 5/5
Before calculating, explain the key idea from “Έννοια συνάρτησης” and which conditions must be checked.
The answer should show not only which rule is used for “Έννοια συνάρτησης”, but also why it is valid here.
Συναρτήσεις
Try independently, use the hint if needed, then open the answer guide.
1. Explain the idea and give one correct foundation example for “Έννοια συνάρτησης”.
Write the givens, a useful representation or rule, and only then calculate.
A complete answer defines “Έννοια συνάρτησης”, shows equivalent steps, and includes a final check.
2. Solve an application and show every intermediate step for “Καρτεσιανές συντεταγμένες”.
Write the givens, a useful representation or rule, and only then calculate.
A complete answer defines “Καρτεσιανές συντεταγμένες”, shows equivalent steps, and includes a final check.
3. Compare a correct and an incorrect approach and justify the difference for “Γραφική παράσταση”.
Write the givens, a useful representation or rule, and only then calculate.
A complete answer defines “Γραφική παράσταση”, shows equivalent steps, and includes a final check.
4. Create a short exam-style question and check your answer for “Συνάρτηση `y = αx`”.
Write the givens, a useful representation or rule, and only then calculate.
A complete answer defines “Συνάρτηση `y = αx`”, shows equivalent steps, and includes a final check.
Where to start: textbook, daily material, PDFs, videos, and worked examples.
Targeted practice before full tests so coverage is clear.
How to measure progress in this chapter and when it enters a cumulative mock.
What to do after finishing the chapter and how it connects to the next unit.
Note: for the official examinable syllabus of each school year, always confirm with the school, tutor, and current Ministry/IEP announcements.