Solutions · Grade 10 · 25 pages · PDF
Straight LinesSolutions
Every worksheet question worked in full.
A complete 22-page IGCSE guide to straight-line graphs. It covers finding the gradient from two points or a graph, and reading the gradient and y-intercept from y = mx + c (including rearranging first). It also covers horizontal and vertical lines, and sketching lines using either the gradient or the two intercepts. It then teaches how to find the equation of a line from a gradient and a point, from two points, or from a graph. Later sections cover parallel and perpendicular lines, the midpoint and length of a line segment (including finding unknown coordinates), and where two lines intersect. Every method comes with clear diagrams and step-by-step worked examples. It ends with a formula summary, a keyword guide and exam tips.
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The full notes: one idea per page, a worked example beside every rule.
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The whole topic on a page or two, for the night before.
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Practice questions in the order the notes teach them.
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