Given is square root of a negative real number, i.e. 
When we find square root of positive real numbers, we get Real answers.
But when we find square root of negative real numbers, we get Imaginary answers. To solve them, we can split the given negative number into product of -1 and the number itself but with positive sign. e.g. -4 = -1 x 4.
For square root of -1, we use english letter 'i' called Imaginary unit i.e. 
Now we can use -0.25 = -1 x 0.25
Hence, "0.5i" is the final answer.
Well, you know just by looking at it because it ends in an even number. Like, the greatest common factor of 4 is 2, 1.) Because no other number can "go into it," and 2.) Because it's even.
If the line is vertical, then all of the point on the line have the same x-coordinate. In this case the x-coordinate is 1, so x=1.
Answer:
neither
Step-by-step explanation:
parallel lines have the same slope and different y-intercept
perpendicular lines have the reciprocal as slopes( 2/5 and 5/2)
as these slopes have neither the answer in NEITHER
K=11 13/56 . I hope this helps
