Visualizing Linear Functions (I)
Problem: Suppose that the variable y is
a linear function of x with y = f (x)
= mx + b and the following table of values.
Move the points (A, B) and (C,D) on the cartesian graph
below to match the ordered pairs of data in the table.

Based on this information, use the point (E,F) on the
cartesian graph (or the related transformation figure) to
a) estimate f (0).
b) estimate the value of an x so that f
(x) = 0.
Describe how the solutions to this problem are related to
the positions of E and F on the transformation figure for f
and the point (E,F) on the cartesian graph.