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Chapter 1: Q. 103 (page 42)
The equations of two lines are given. Determine if the lines are parallel, perpendicular, or neither.,
The given lines are neither parallel nor perpendicular.
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A cereal company finds that the number of people who will buy one of its products in the first month that it is introduced is linearly related to the amount of money it spends on advertising. If it spends \(40,000 on advertising, then 100,000 boxes of cereal will be sold, and if it spends \)60,000, then 200,000 boxes will be sold.
(a) Write a linear equation that relates the amount A spent on advertising to the number x of boxes the company aims to sell.
(b) How much advertising is needed to sell 300,000 boxes of cereal?
(c) Interpret the slope.
To solve an equation of the form {expression in x = 0}
using a graphing utility, we graph = {expression in x}
and use ________ to determine each x-intercept of the
graph.
The term grade is used to describe the inclination of a road. How does this term relate to the notion of slope of a line? Is a 4% grade very steep? Investigate the grades of some mountainous roads and determine their slopes. Write a brief essay on your findings.
True or False Two triangles are congruent if two angles and the included side of one equals two angles and the included side of the other.
True or False The midpoint of a line segment is found by averaging the x-coordinates and averaging the y-coordinates of the endpoints.
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