8. y _ 2x _ 5: (8, ), (_1, ), ( , _1)

Graph equation. Plot at least five points for each equation.
Use graph paper.

70. x _ 2y _ 6

Dental services. The national cost C in billions of dollars
for dental services can be modeled by the linear equation
C = 2.85n + 30.52,
where n is the number of years since 1990 (Health Care
Financing Administration, www.hcfa.gov).

a) Find and interpret the C-intercept for the line.
b) Find and interpret the n-intercept for the line.
c) Graph the line for n ranging from 0 through 20.

#42. Graph the line with the given point and slope.

The line through ( 2, 5) with slope 1

Solve problem.

52. Draw l1 through (_4, 0) and (0, 6). What is the slope of any
line parallel to l1? Draw l2 through the origin and parallel to l1.