Question

4. Determine graphically whether the following pair of linear equations :
3x - y = 7; 2x + 5y + 1 = 0
has
(i) a unique solution,
(ii) infinitely many solutions, or
(iii) no solution
(​

Answer 1

Step-by-step explanation:

3x-y=7

put x=0,y=-7

put y=0,x=7/3

2x +5y=-1

put x=0,y=-1/5

put y=0,x=-1/2

plot graph for both equations on the same plane

see from the graph whether the lines are intersecting,parallel or coincident