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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Each of these equations represents a straight line. You find at least two values of x and y for each of these equations which satisfy the equation. Find integral values for x & y so that it is to easy to draw graph. For example, For x + 2y = 4, when x = 2, y = 1 and when x = 4, y = 0. These two sets (2,1) and (4,0) represent two points through which the line represented by x + 2y = 4. Hence on graph draw a line through the points (2,1) and (4,0)

Similarly, points (2,1) and (6, -6) represent two points through which the line represented by 7x + 4y = 18 passes. Draw a line through these points. You will see that the lines cut each other at only one point. Hence this presents uniqueness of the solution.