Q. 1 D5.0( 2 Votes )

# Solve the following pair of linear equation in two variables (by graph)x–y = 6, 3x – 3y = 18

Generally, we substitute x = 0 or y = 0 in the given linear equations to get y and x. So we get two points on the straight line. To find more points on line, take different values of x related to it, we get different values for y from the equation.

We get the following tables for the given linear equations.

for

x—y = 6

for, 3x—3y = 18

Plotting these points on a graph and joining them, we get two straight lines.

From the graph, we can see that both lines coincide and hence there are infinite number of solutions.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Pair of Linear Equations in Two Variables46 mins
Quiz | Real Life Problems Through Linear Equations56 mins
Quiz | Solution of Linear Equations53 mins
Champ Quiz | Consistency and Inconsistency of Solutions36 mins
Emphasizing on Elimination Method48 mins
Elimination (quicker than quickest)44 mins
Consistent and Inconsistent Equations33 mins
Real Life Problems Through Linear Equations41 mins
All Kinds of Word Problems in Linear Equations42 mins
Master Substitution Method46 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses