Page 37 - More Higher algebra
P. 37
On your graph paper, mark out an x-axis between -30
to 30 and a y-axis from -40 to 25 and plot the data
points from your calculator. Note the asymptote at
x = 4. Join the dots, you should have a plot like this
one,
You can see from the graph there is an oblique
asymptote; calculate its gradient from two
coordinates,
17 − (−32) 49
= = ≈ 1
25 − (−25) 50
33
