ICSE /Class 9
Maths MCQ Based On
Simultaneous linear equations in two variables
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ICSE Class 9 Maths Simultaneous linear equations in two variables

Substitute x in the form of y or vice versa.
Let the no. of books with them be x & y, Form equations solve and get x + y.
For k = 6 equations have infinitely many solutions. For any k other than 6, equations have Nonzero solution.
Draw the graph.
Use elimination method.
Either add or subtract equations to get an equation in one variable.
Let digits be x & y. Form equations accordingly and solve.
Slope intercept form.
Add 2nd and 3rd equation; find x + y and put in 1st equation to find k.
One equation will have infinitely many values of y & x.
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