Investigate relationships between tables, equations and graphs 4 credits External
Click on objectives below for links:
KEY TIPS FROM STUDYIT:
- Graphs will involve only linear, quadratic and simple exponential functions.
- Features could include x and y intercepts, maxima and minima, axes of symmetry, domain and range, and gradients of straight lines (rates of change).
- You may be asked to write equations for data provided in a table of values or from a graph.
- You may be required to draw graphs, construct tables, or write equations for word problems.
- An understanding of transformations of graphs is expected.
- Use a ruler for drawing line graphs.
- Look carefully at the scales on each axis. When working out the gradient do not simply count squares – remember to check how many units each grid line represents first.
- Know the difference between 'intercept' and 'intersect'. An intercept is a point where the graph crosses the axes. Intersect means cross or meet.
- Parabolas should be smooth curves with a rounded turning point (vertex).
- Show your working clearly in correct mathematical steps. Give a full sentence stating your answer.
- Answer the question in the context that is given. Use common-sense to check your answer.
- Reread the question to check that you have answered the question asked.
- A graph may be made up of two different functions (piecewise graph). It could be made up of two lines, or part of a parabola and a line.
- Understand the difference between graphs representing situations involving continuous data and graphs representing situations involving discrete data.
- Attempt all questions as evidence from higher level questions may be used in awarding credit for a lower grade.