LEARNING OBJECTIVE: To recognise a linear equation and draw the straight line graph that represents it
SUCCESS
CRITERIA: You will be able to find at least three coordinates form any linear equation that will enable you to draw the straight line that represents the equation
RULE: You can spot a linear equation as it will NOT have any squared or cubed letters in it.
BE CAREFUL IF a function has brackets in it YOU MUST expand the brackets first before applying the above rule (Give and example on IWB to demonstrate)
STARTER: Find three coordinates that are true for each of these four linear equations.
y = 3x -2 | y = -5x +3 | |
2x + y = 10 | 6x + 2y = 10 | |
Use these examples above to check coordinate answers; Show how to organise answers in a table.
LESSON: Why Minimum of three Coordinates? 5 minute discussion in groups
Work through Questions 4 onwards from these questions
PLENARY: Checking Answers. Quickly find three cords for these two equations and sketch them
Y = 5x + 2, 3x + 2y = 12
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