Mathematics for IGCSE & O level - Coordinate Geometry (Section 4 - No. 10)
Which of the following is not a form of a straight line equation?
y = mx + c
ax + by = c
y - y1 = m(x - x1)
y = ax^2 + bx + c
Giải thích
y = ax^2 + bx + c is the general form of a parabola (quadratic equation)