Question

3 points 12. Solve the linear equationby substitution method 2x+3y= 11 and x+2y=7 (3marks) 1
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Answer 1

Answer:

(i) From the graph, we find that all the three points lie on the same straight line. Hence, the given points are collinear.

(ii) From the graph, we find that all the three points do not lie on the same straight line. Hence, the given points are not collinear.

(iii) From the graph, we find that all the three points lie on the same straight line. Hence, the given points are collinear.

Answer 2

Step-by-step explanation:

2x+3y=11

2x=11-3y

x=11-3y/2

x+2y=7

11-3y/2+2y=7

11-3y+4y=14

y=14-11

y=3

x+2y=7

x+6=7

x=1