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Equation of Straight Line. Equation of a straight line (gradient-intercept form) : y = m x + c where m is the gradient and c is the y-intercept . Equation of a straight line (given gradient and 1 point) :. Finding equations. Find the equation of the straight line joining

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## Equation of Straight Line

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**Equation of Straight Line**Equation of a straight line (gradient-intercept form): y = mx + c where m is the gradient and c is the y-intercept. Equation of a straight line (given gradient and 1 point):**Finding equations**Find the equation of the straight line joining (2, 4) and (–2, 3) (–2, – 4) and (1, –7)**Finding equations**Find the equation of the lines, given the gradient and the coordinate of a point lying on the line. (a) m = 3, (1, 1) (b) m = 0.5, (5, 7)**Finding Equations**• What is the equation of the line which has gradient 2 and which passes through the origin?**Finding Equations**• Find the equation of the straight line that is parallel to and bisects the line segment joining the points (3, 1) and (1, –5).**Finding Equations**Find the values of k if the line is parallel to**Finding Equations**Given the line, find • its gradient; • the coordinates of the point at which it cuts the x-axis.**Double-intercept form**General form Gradient-intercept form *Given gradient and 1 point Straight line equations of different forms**Collinear Points**3 points are collinear if gradient AB = gradient BC

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