Mathematics for IGCSE & O level - Coordinate Geometry (Section 3 - No. 17)
What are the two key pieces of information needed to determine the equation of a line?
The y-intercept of the line.
Two points on the line.
The x-intercept of the line.
The gradient of the line.
解释
The equation of a line can be defined by the slope (gradient) and a point on the line, or by two points on the line. X and Y intercept only will not define the line.