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Use the Graphical Method to Find the Value of 'X' for Which the Expressions 3 X + 2 2 and 3 4 X − 2 - Mathematics

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Question

Use the graphical method to find the value of 'x' for which the expressions `(3x + 2)/(2) and (3)/(4)x - 2`

Graph

Solution

Let y = `(3x + 2)/(2)`

The table for y = `(3x + 2)/(2)` is

X 2 4 - 2
Y 4 7 - 2

Let y = `(3)/(4) x - 2`

The table for y = `(3)/(4) x - 2` is

X 4 - 4 8
Y 1 - 5 4

Now plot the points on a graph and we get the following required graph:

Thus, the value of 'x' is - 4.

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Chapter 27: Graphical Solution (Solution of Simultaneous Linear Equations, Graphically) - Exercise 27 (B) [Page 329]

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Selina Concise Mathematics [English] Class 9 ICSE
Chapter 27 Graphical Solution (Solution of Simultaneous Linear Equations, Graphically)
Exercise 27 (B) | Q 13 | Page 329

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