Using Graphs to Solve Equations and Inequalities (HSC SSCE Mathematics Advanced): Flashcards

Count the intersection points of the two graphs

Graph $y = \text{LHS}$ and $y = \text{RHS}$ on same axes

The x-coordinates

Above the RHS curve

Below the RHS curve

For $\geq$ or $\leq$ inequalities

V-shape

Quickly see how many solutions exist and where they are

$y = 2^x$ and $y = x + 2$

$x \leq 1$ or $x \geq 7$