Mathematics for IGCSE & O level - Coordinate Geometry (Section 1 - No. 15)
Which of the following is the general form of the equation of a straight line?
y = mx + c
Ax + By + C = 0
y - y1 = m(x - x1)
x^2 + y^2 = r^2
설명
The general form is y = mx + c or Ax + By + C = 0. Point-slope form is y - y1 = m(x - x1).