Higher Maths Straight Line with perfect solutions 2024

What is the gradient of a horizontal line? correct answersThe gradient = 0 What is the equation of a horizontal line? correct answersy = b (where 'b' is a number) What is the equation of the x-axis? correct answersy = 0 What is the gradient of a vertical line? correct answersThe gradient is undefined What is the equation of a vertical line? correct answersx = a (where 'a' is a number) What is the equation of the y-axis? correct answersx = 0 What is the gradient formula? correct answersm = (y₂ - y₁)/(x₂ - x₁) How do you find the equation of a straight line? correct answersYou need to know the gradient of the line and a point on the line, then you use y − b = m(x − a) How do you find the gradient of a straight line if you know its equation? correct answersRearrange to the form y = mx + c How do you find the size of the angle between a line and the x-axis? correct answersUse m = tanθ What is the rule for parallel lines? correct answersm₁ = m₂ (they have the same gradient) What is the rule for perpendicular lines? correct answersm₁ x m₂ = -1 How do you find where two lines meet? correct answersUse simultaneous equations or use y = y