4.2
Writing equations of lines in slope-intercept form.
y = mx + b
slope = 3
y-intercept is (0, 5)
slope = -2
and passes through the point (3, 5)
slope = 1
4
and passes through the point (6, -3)
slope = -17
and passes through the point ( 0, -25)
slope = -3
5
and passes through (10, 0)
slope = 0
and passes through (4, -7)
slope is undefined
and passes through (4, -7)
Your cell phone company charges a monthly access charge plus
$0.02 per minute.
Last month your bill was $31.06 for 178 minutes.
Write an equation for
the monthly charge, y, in terms of the number of minutes, x,
you talk on the phone.
Write an equation of the line that passes
through the points (7, 3) and (2, 2)
Amy and Traci are going to summer camp. The camp
charges a registration fee plus a certain amount per
day.
Amy went to camp for 6 days and paid a total of $305.
Traci paid a total of $641 for 14 days at camp.
Write an equation in slope-intercept form that models
the total cost (y) in terms of the number of days spent
at camp (x).