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Viva Voce: Graph of Linear Equation | Lab Manuals for Class 9 PDF Download

Q.1. Check whether the point (-3, -2) lies on the line -2x + y = 7.

No, (-3, -2) does not lie on the given line.


Q.2. The cost of a ribbon is twice the cost of a hair pin. Write this statement in two variables in linear equation.

x = 2y, where x is the cost of a ribbon and y is the cost of a hairpin.


Q.3. Write the solution for x= 1 in 2x+ y = 4.

(1,2)


Q.4. Write solution of 6x+ 5 = 1.

-2/3


Q.5. How many solutions will you obtained for x + y = 1?

Infinitely many solutions.


Q.6. How many solutions will you obtained for 2x + 5 = 3?

One solution


Q.7. If x = 5, does the equation x + 5 = 10 verify?

Yes


Q.8. Write the geometric representation of y = 3 as an equation in one variable.

The graph is a line parallel to x-axis at a distance of 3 from origin.


Q.9. Write any two solutions of x = 4y.

(0,0) and (4,1)

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