Answer:
3
Step-by-step explanation:
3 is the only number here with factors of itself (3) and 1
First system: no solution, since the two lines are parallel; they never cross.
Second system: one solution
Third system: infinitely many solutions, since the second equation is a multiple of the first
y^2=100
y = √100
y = 10 and y = - 10
Answer
E. -10
F. 10
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