Explanation Calculation: The steps to find the point of intersection using a graphing calculator are follows, • Set the calculator up for instructions on what to graph by pressing Y = . This produces the screen as follows. Figure ( 1 ) • Type “ − 7 x + 12 ” where the screen reads Y 1 = and type “ − 12 x − 71 ” where the screen reads Y 2 = . To type the symbol x press X . T . θ . n . After typing “ − 7 x + 12 ” and “ − 12 x − 71 ” press the ENTER button. This produces the following screen. Figure ( 2 ) • Press the WINDOW button to graph the equation by entering the values as shown below. “Xmin” and “Xmax” refers to the left and right boundaries of the graph, respectively. “Ymin” and “Ymax” refers to the lower an upper boundary of the graph, respectively. “Xscl” and “Yscl” refer to the scales on the x and y axes. Figure ( 3 ) • Press the graph button to draw the graph of the lines. Figure ( 4 ) • Press 2nd CALC button and select option 5 To determine (b) To check: The solution by substituting the ordered pair into each of the two equations.

8th Edition

ISBN: 9781305104174

Author: David B. Johnson, Thomas A. Mowry

Publisher: Cengage Learning

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Question

Chapter D, Problem 4E

To determine

(a)

To find:

The point of intersection of the equations y=−7x+12 and y=−12x−71

To determine

(b)

To check:

The solution by substituting the ordered pair into each of the two equations.

Expert Solution & Answer

Chapter D Solutions

Mathematics: A Practical Odyssey

Ch. D - Prob. 1E Ch. D - Prob. 2E Ch. D - Prob. 3E Ch. D - Prob. 4E Ch. D - Prob. 5E Ch. D - Prob. 6E

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(a) To find: The point of intersection of the equations y = − 7 x + 12 and y = − 12 x − 71

Solution Summary: The author explains the steps to find the point of intersection using a graphing calculator.

Concept explainers

Videos

(a)

To find:

The point of intersection of the equations y=−7x+12 and y=−12x−71

(b)

To check:

The solution by substituting the ordered pair into each of the two equations.

Chapter D Solutions

(a) To find: The point of intersection of the equations y = − 7 x + 12 and y = − 12 x − 71

Solution Summary: The author explains the steps to find the point of intersection using a graphing calculator.

Concept explainers

Videos

(a) To find: The point of intersection of the equations y=−7x+12 and y=−12x−71

(b) To check: The solution by substituting the ordered pair into each of the two equations.

Chapter D Solutions

(a)

To find:

The point of intersection of the equations y=−7x+12 and y=−12x−71

(b)

To check:

The solution by substituting the ordered pair into each of the two equations.