Level 3 · Mathematics M3.9
Coordinates and straight lines
Plot points on a grid and draw the straight lines that rules make.
Name any place on a grid with two numbers, in all four quarters. Move and flip shapes. Then turn a rule such as y = 2x + 1 into a straight line, measure how steep it is, and read graphs from real life.
8 chapters. Your place is kept on this device only.
You are ready for this book if
You can find the value of 2x + 3 when x = 4.
- One step up M4.8 Linear and simultaneous equations
- This book M3.9 Coordinates and straight lines
- One step down M2.8 Patterns and rules
Contents
- 1Coordinates, readunderstood
- 2All four quarters of the grid, readunderstood
- 3Shapes on a grid, readunderstood
- 4From a rule to a line, readunderstood
- 5Lines like x = 3 and y = −2, readunderstood
- 6Steepness: the gradient, readunderstood
- 7The equation y = mx + c, readunderstood
- 8Graphs from real life, readunderstood
Keep it, print it, pass it on
- One file for any phone
761 KB. Opens with no internet. Share it with anyone. - PDF to print
858 KB, 99 A4 pages. Answers at the back. Copies well in black and white. - EPUB for reading apps
120 KB. For e-readers and book apps.
For parents and teachers
For learners who can find the value of 2x + 3 when x = 4 and who know negative numbers. In many schools this fits children of about 11 to 13, and older learners who never drew a graph can start here too. Each idea is drawn on an exact grid before it is written as a rule. Each chapter takes one or two short sessions. A learner can work alone: every exercise has its answer and the reason for it. Each chapter also has a short page for the adult, with three questions to ask.
Strand: Algebra. Written and drawn by attnom. Free to read, print and share.