The equation x a + y b = 1 is an equation for a line that gives different information than the other forms we have used.
(a) What are some points on the graph of x 3 + y 7 = 1?
(b) When might this form be useful? When might it be useless?
for x 3 does it mean like 3x as in 3 * x or does it mean something like x_3
x over 3 and y/7
+96 
