Graphical Method of Solution of a Pair of Linear Equations

IMPORTANT

Graphical Method of Solution of a Pair of Linear Equations: Overview

This topic covers concepts, such as, Graphical Method of Solving a Pair of Linear Equations, Unique Solution of a Pair of Linear Equations in Two Variables,Dependent Pair of Linear Equations and No Solution of a Pair of Linear Equations in Two Variables etc.

Important Questions on Graphical Method of Solution of a Pair of Linear Equations

MEDIUM
IMPORTANT

For which value of k will the following pair of linear equations have no solution?
3x + y = 1,

(2k -1)x + (k -1)y = 2k + 1

MEDIUM
IMPORTANT

For the given system of equations, determine the value of k for which the given system has no solution.

3x-4y+7=0

kx+3y-5=0

HARD
IMPORTANT

The value of a for which the pair of equations 8x+5y=9 and ax+10y=15 has no solution is

MEDIUM
IMPORTANT

Draw graphs of x+y+3=0 and 3x-2y+4=0. Find the coordinates of the point of intersection of lines. Also find the distance of the point of intersection of the lines from the origin in cm.

HARD
IMPORTANT

Find the area of the triangular region whose vertices are the points of intersection of the graphs 2x+y=5, y=x-4 and y=5.

MEDIUM
IMPORTANT

Solve the pair of linear equations in two variables by graphical method.

3x-4y-2=0

2x+3y-7=0

MEDIUM
IMPORTANT

Which is not a method to find the solution of 2x-3y=9 and 3x+4y=19?

HARD
IMPORTANT

The graph of a line represented by the equation ax+y+8= 0 is shown in the figure below.

Question Image

Find the value of a. Find the point of intersection of this line with the line represented by the equation 4x-3y-14= 0.

Show your work.

MEDIUM
IMPORTANT

The pair of linear equations 3x2+5y3= 7 and 9x+10y= 14 is:

HARD
IMPORTANT

Solve the following system of linear equations graphically: 3𝑥+𝑦12=0, 𝑥3𝑦+6=0. Shadow the region bounded by these lines and the 𝑥-axis. Also find the ratio of areas of triangles formed by given lines with 𝑥-axis and the 𝑦-axis.

MEDIUM
IMPORTANT

Represent the following system of equations graphically and comment on solutions: x+y=2; 2x+2y=4.

HARD
IMPORTANT

Draw the graph of the equation x=3 and 4x=3y. Find the area of the figure obtained.

MEDIUM
IMPORTANT

Draw the graph of the equation x=3 and 4x=3y. Shade the region obtained

MEDIUM
IMPORTANT

Show graphically that the system of equations 

3x-y=2

9x-3y=6

has infinitely many solutions.

EASY
IMPORTANT

Explain no solution, unique solution and infinitely many solutions.