Lesson 1 - Features of linear graphs
1. Gradient
* Calculate gradient of the line passing through the points (1, 4) and (3, 8) .
2. Y-intercept
The point where the graph cuts the y-axis. Y-intercept of the below line is 2.
* What is the y-intercept of the line with the equation y = 2x - 1?
Challenging question
* What is the y-intercept of the line with equation 2x + 5y = 10? (hint: make y the subject).
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