Given a point in coordinates form

, one can compute the cartesian form like this:

We have:

We get the cartesian form then:
C. It is always a rational number. You cannot determine its sign without knowing the values of a and b.
Answer:
A

and
D

Step-by-step explanation:
Because if you simplify the equation theb you get 8x+4 therefore D is equivalent to it. A is also equal to D which make it equivalent to the equation as well.
Answer: 0.685 meters
Step-by-step explanation:
Answer: 18 CM
Step-by-step explanation:
Since there are 4 sides to a rectangle, and 2 of them are lengths, we can multiply 24 by 2, which results in 48, and subtract it from the overall perimeter, which results in 36. Since the width is 2 sides, we can divide 36 by 2, which results in 18.