f(x)= mx, x<3
Make a sketch.
When , we have a line through the origin with slope
When , we have a point
When , we have the line
. . It has y-intercept 9 and slope -2.
We want the three graphs to "meet" at
Can you work it out?Code:\| * |\ | \ | \ | \ | \ | \ * | \ * | o | * :\ | * : \ | * : \ - - * - - - + - * - - * | 3 \ |