Find out how to solve simultaneous equations using a graph in this Bitesize KS3 maths video. ... work out the y values for each equation. For example, put x = 0 into the equation y = 7 – 2x.

To do this, begin by writing your equation. For example: y=x+3 or y=sin(x)+cos(2x). Next, use Lasso tool to select the equation and then, on the Draw tab, click the Math button.. Now, from the ...