Topic 5 0.0 / 5 ? MathematicsStraight line graphsASEdexcel Created by: Jemma1494Created on: 03-06-21 19:56 Equation for straight line graphs y = mx + c Also written as ax + by + c = 0 1 of 7 Finding the gradient Gradient = change in y / change in x Gradient = m in equation 2 of 7 Making an equation with gradient and coordinates y - y1 = m(x-x1) 3 of 7 Rules for parallel lines Parallel lines have the same gradient 4 of 7 Rules for perpendicular lines Perpendicular lines have negative reciprocal gradients 5 of 7 Finding the distance between two points d = √(x2-x1)^2 + (y2-y1)^2 6 of 7 Area of triangle on a graph Use distance between points to find lengths of sides Use area = 1/2 base x height 7 of 7
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