AS/A2 Pure 1 Pure 3

P2 Topic 2: Functions
y=|mx+c|
Investigate the effect of changing m or c.

Summary The graph of y = |mx+c|: is always positive is symmetric about the vertical line x = -c/m A note about graphic calculators A graphic calculator may be allowed in your exam. The TI-83, or similar model, can display modulus graphs for you. Select the Y= screen: Enter Y1 = abs(MX+C) (Find abs in the CATALOG menu) Then select the GRAPH screen. You can then choose different values for the constants M and C. For example, to make M = 1, press 1 ALPHA M. Based on free Java applets from JavaMath