Formulae: Unit 6 0.0 / 5 ? MathematicsGraphsGCSEEdexcel Created by: annanolanCreated on: 23-12-16 09:29 What shape is the graph of a linear equation? straight line 1 of 14 What is the equation for a straight line graph? y=mx+c 2 of 14 How do you calculate speed? Distance / time 3 of 14 How do you know that two graphs are in direct proportion? Their graph is a straight line through the origin and when one variable is multiplied by n, so is the other 4 of 14 What are the coordinates of a midpoint? (x1 + x2 / 2 , y1 + y2 / 2) 5 of 14 What is the product of the gradients when two lines are perpendicular? -1 6 of 14 When a graph has a gradient m, what is the gradient of it's perpendicular graph? -1/m 7 of 14 What term does a quadratic equation contain? x^2 (and sometimes x) 8 of 14 How many solutions does a quadratic equation have? 0, 1 or 2 9 of 14 What term does a cubic equation contain? x^3 (and sometimes x^2 and x) 10 of 14 What is an asymptote? The axis that get very close to the graph but never touches them 11 of 14 What shape is x^2? smiley face shape 12 of 14 What does a reciprocal graph look like? Asymptotes 13 of 14 What is the equation of a circle when the centre is (0,0) and the radius is r? r^2 = x^2 + y^2 14 of 14
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