Mathematics: Applications and Interpretation · Topic 2: Functions

SL2.1 — Straight lines and gradients

Mathematics: Applications and Interpretation · SL / HL · syllabus-mapped notes

1. AISL2.1.1

   Gradient and forms of a straight line

   Gradient $m$, the $y$-intercept, and the forms $y=mx+c$, $ax+by+d=0$ and $y-y_1=m(x-x_1)$.

2. AISL2.1.2

   Parallel, perpendicular and inclines

   $m_1=m_2$ for parallel lines, $m_1\times m_2=-1$ for perpendicular, and gradient as steepness of a ramp or road.