Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Equations and Inequations
Equations and inequalities describe the relationship between two mathematical expressions.
Linear Functions
A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.
Question
For each problem, write a direct variation equation. Then use the equation to solve the problem.
![ation to solve the problem. (second box)
y varies directly with x, and
= 120 lb when x = 50 lb.
Find y
y if x = 40 lb.
y is directly proportional to x,
and y = 45 when x = $600.
Find y if x $1000.
%3D
%3D
=1.8x
:y 8.4x
y= 3.2x
*V= 07X
= 0 075x
: 70
39.6
#486
:96
L--J](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa2b0b9cf-e692-49b7-89da-d59525f8e39e%2F0fa8c4d3-eee2-40b5-b040-8aa42d833613%2Fg6vs4r_processed.jpeg&w=3840&q=75)
Transcribed Image Text:ation to solve the problem. (second box)
y varies directly with x, and
= 120 lb when x = 50 lb.
Find y
y if x = 40 lb.
y is directly proportional to x,
and y = 45 when x = $600.
Find y if x $1000.
%3D
%3D
=1.8x
:y 8.4x
y= 3.2x
*V= 07X
= 0 075x
: 70
39.6
#486
:96
L--J
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