Finding Value using Substitution
Finding Value using Substitution
Finding Value Using Substitution
To find solutions for a linear equation in two variables we can follow the following steps:
Illustration: Find a pair of solution for the equation 3x+ 2y= 8
Solution: To find the solution for this equation
Let x= 2
Putting the value of x in the equation we get
3(2)+2y= 8
6+2y=8
2y=8-6
2y=2
y=1
(2,1) is a solution for this equation.
Illustration: In a linear equation 10x-3y= 2. If the value of x = 2 find the value of y
Solution: Putting the value of x in the equation
10x-3y=2
10(2)-3y=2
20-3y=2
-3y= 2-20
-3y= -18
y=6
The value of x when y = 3 in the equation 2x+y=9 is _______________ | |||
| Right Option : A | |||
| View Explanation | |||
Which of the following expressions shows the value of y in terms of x, if 17x + 14y = 8 ? | |||
| Right Option : C | |||
| View Explanation | |||
In the linear equation 20x - 3y = 3 , if x = 3, the value of 'y' is _________________ | |||
| Right Option : D | |||
| View Explanation | |||
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