Solving Equations Using Graphs (AQA GCSE Maths): Flashcards

At intersection points where graphs cross

Values that satisfy both equations simultaneously

Draw both graphs on same axes, find where they cross

Circle centred at origin with radius 4

Draw $y = 0.7$ line on $y = sin x$ graph, find intersections

The coordinates (x, y) where the graphs meet

1 decimal place unless stated otherwise

Plot $y = 2x^2 - 3x$, draw horizontal line at $y = 7$

To use graphs already drawn, saves time

Look for all intersections - may have multiple solutions