What we have learnt?
1) Revision and extension of previous lesson
2) Double Intercept formula
Shortcut for checking answers- rewriting an equation (y=mx+c) into (x/a+y/b=1)
Note. The a is the x intercept and the b is the y intercept.
i.e. y= 1/2x-3
To make this in the form of y=mx+c, cross multiply.
TO PONDER ABOUT...
Why is the x intercept (a, 0) and the y intercept (0, b)?