Math Log #35 A satellite company charges an installation fee of $50 plus an additional $39.95 per month for service. Write a function to represent the total cost of any number of months of service. Make a function table to find the total cost for 1, 2, 3, 4, or 5 months.

Math Log #35 answers I - A satellite company charges an installation fee of $50 plus an additional $39.95 per month for service. Write a function to represent the total cost of any number of months of service. Make a function table to find the total cost for 1, 2, 3, 4, or 5 months. Domain Rule Range X Y = $39.95x + $50 Y 1 $39.95(1) + $50 $89.95 2 $39.95(2) + $50 $129.90 3 $39.95(3) + $50 $169.85 4 $39.95(4) + $50 $209.80 5 $39.95(5) + $50 $249.75 C – y = $39.95x + $50 A – The function to represent the total cost of any number of months of service is y=$39.95x + $50. N – Neighbor

Module 6 Lesson 4 and 5 Outcome: Students describe qualitatively the functional relationship between two types of quantities by analyzing a graph.

Identifying Linear and Nonlinear Functions Check to see if the rate is constant Find the change in y over the change in x If the rate is constant, then the function is linear Graph the points on a coordinate plane If the points form a straight line, then the function is linear

Increasing and Decreasing Functions The linear function whose graph has a positive slope is said to be an increasing function. A linear function whose graph has a negative slope is said to be a decreasing function. A linear function whose graph has a zero slope is said to be a constant function. A vertical line is linear but is not a linear function.

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Homework Complete page 24-27 (1-4)