2 answers:
Answer:
1-c
2-b
3-a
Step-by-step explanation:
1. 7y=14
y=2
-7y=-14
y=2
so the equation has one solution
2. 0=0
so the equation has infinite solution
3. 0=2 false
so the equation has no solution
<u>1 solution</u>
8x+7y=30
8x-7y=2
<u>infinitely many solutions</u>
-8x+7y=-2
8x-7y=2
<u>no solution</u>
8x-7y=2
-8x+7y=2
Explanation
The number of solutions of a pair of linear equations are determined by the following criteria
1 solution
-
in the first pair 

therefore 
infinitely many solution

In the second pair of equations -8x+7y+2=0 and 8x-7y-2=0

since
, the pair of equations have infinitely many solutions
no solution

in the third pair of equation

Here 
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