We can solve this equation by completing the square. Notice that 
and 
. Therefore, we can turn 
into 
. y, in this equation, only has one real solution: 4. So your answer would be (B).
8. Which pair of lines must be parallel?
1 answer:
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Let'sSo, we gave 2 parallel lines and 2 transversals, we have to match the angles.
Let's start with angle b,
Let's move on to angle e,
Let's move on to angle d,
Moving to angle c, we have;
And, angle a;
