SOLUTION: The point at (a, b) on a Cartesian plane is reflected over the y-axis to the point at (j, k). If a + j = 0 and b + k = 0, what is the value of b?

Algebra ->  Bodies-in-space -> SOLUTION: The point at (a, b) on a Cartesian plane is reflected over the y-axis to the point at (j, k). If a + j = 0 and b + k = 0, what is the value of b?      Log On


   

Question 1087590: The point at (a, b) on a Cartesian plane is reflected over the y-axis to the point at (j, k). If a + j = 0 and b + k = 0, what is the value of b?
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
solution:
(a,b) is reflected over the y -axis to the point at ( j , k )
so, (+j ,+k+) = (-a, b)
a%2Bj=+%28a%2B%28-a%29%29=a-a+=0
+b%2Bk=b%2Bb=2b=0,=> b=0