Graphs
Overzicht
Graphs give you a way to see algebra. Every equation you write down corresponds to a curve or a line on a set of axes, and reading that picture tells you things the algebra alone can hide: where a quantity reaches its maximum, how fast something is changing, or where two conditions are satisfied at once.
This topic starts with the coordinate system itself and builds up through straight-line graphs to quadratics and, at Higher tier, cubics, reciprocals, and trigonometric curves. You will learn to find gradients, write equations of lines, and apply transformations to function graphs.
Doelstellingen
- Interpret information presented in a range of linear and non-linear graphs
- Understand and use conventions for rectangular Cartesian coordinates
- Plot points (x, y) in any of the four quadrants or locate points with given coordinates
- Determine the coordinates of points identified by geometrical information
- Determine the coordinates of the midpoint of a line segment, given the coordinates of the two end points
- Draw and interpret straight line conversion graphs
- Find the gradient of a straight line
- Recognise that equations of the form y = mx + c are straight line graphs with gradient m and intercept on the y-axis at the point (0, c)
- Recognise, generate points and plot graphs of linear and quadratic functions
- [Higher] Recognise, plot and draw graphs with equation y = Ax^3 + Bx^2 + Cx + D and related reciprocal and trigonometric forms
- [Higher] Apply to the graph of y = f(x) the transformations y = f(x) + a, y = f(ax), y = f(x + a), y = af(x) for linear, quadratic, sine and cosine functions
- [Higher] Interpret and analyse transformations of functions and write the functions algebraically
- [Higher] Find the gradients of non-linear graphs by drawing a tangent
- [Higher] Find the intersection points of two graphs, one linear and one non-linear, and recognise that the solutions correspond to the solutions of the combined equation
- [Higher] Calculate the gradient of a straight line given the coordinates of two points
- [Higher] Find the equation of a straight line parallel to a given line; find the equation of a straight line perpendicular to a given line
Mindmap
Dit onderwerp is in kaart gebracht zodat je ziet hoe de ideeen samenhangen.
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Flashcards
Snelle geheugentraining op wat bij dit onderwerp getoetst wordt.
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Lesnotitie
Volledige lesnotitie beschikbaar in de Green Bridge-app
Installeer de Green Bridge CBT-app op je telefoon of computer voor de volledige IGCSE-bibliotheek: examens uit voorgaande jaren, correctiemodellen, mindmaps, flashcards en audiolessen.
Lesevaluatie
Gefeliciteerd met het voltooien van de les op Graphs. Nu je de sleutelconcepten en ideeën, het is tijd om uw kennis op de proef te stellen. Deze sectie biedt een verscheidenheid aan oefeningen vragen die bedoeld zijn om uw begrip te vergroten en u te helpen uw begrip van de stof te peilen.
Je zult een mix van vraagtypen tegenkomen, waaronder meerkeuzevragen, korte antwoordvragen en essayvragen. Elke vraag is zorgvuldig samengesteld om verschillende aspecten van je kennis en kritisch denkvermogen te beoordelen.
Gebruik dit evaluatiegedeelte als een kans om je begrip van het onderwerp te versterken en om gebieden te identificeren waar je mogelijk extra studie nodig hebt. Laat je niet ontmoedigen door eventuele uitdagingen die je tegenkomt; beschouw ze in plaats daarvan als kansen voor groei en verbetering.
- What is the gradient of the line y = -4x + 7? A) 7 B) -4 C) 4 D) -7 Answer: B
- What is the midpoint of the segment from (2, 8) to (6, 2)? A) (4, 5) B) (8, 10) C) (3, 4) D) (4, 10) Answer: A
- In which quadrant does the point (-3, 5) lie? A) First B) Second C) Third D) Fourth Answer: B
- The line y = 2x + 1 is parallel to which of the following? A) y = -2x + 3 B) y = 2x - 5 C) y = 0.5x + 1 D) y = -0.5x + 1 Answer: B
- A line has gradient 3. What is the gradient of a line perpendicular to it? A) 3 B) -3 C) 1/3 D) -1/3 Answer: D
Maak deze vragen in de app
Maak deze vragen in de app
Aanbevolen Boeken
Verder leren met open bronnen
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Leerboekparagraaf
Graph Linear Equations in Two Variables
Plot points in a rectangular coordinate system
"Intermediate Algebra: Graph Linear Equations in Two Variables" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/intermediate-algebra/pages/3-1-graph-linear-equations-in-two-variables. Access for free at https://openstax.org/books/intermediate-algebra/pages/1-introduction
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Leerboekparagraaf
Slope of a Line
Find the slope of a line
"Intermediate Algebra: Slope of a Line" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/intermediate-algebra/pages/3-2-slope-of-a-line. Access for free at https://openstax.org/books/intermediate-algebra/pages/1-introduction
Gepubliceerd door andere organisaties onder open licenties, vermeld zoals zij vragen. Links openen hun websites.
Oefen Proefexamenvragen
Wilt u proefexamenvragen over Graphs oefenen? Download de Green Bridge CBT-app voor toegang tot proefexamenvragen en volledige oefentoetsen over dit onderwerp.
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