Question

(4,5) is the midpoint between (2, 1) and (x, y). What is the value of x y(product of x y)? *​

Answer 1

Answer:

54

Step-by-step explanation:

Using mid point formula,

mid point of (a,b) and (c,d) is (a+c/2 , b+d/2).  

So, here,  mid point of line is,

⇒ (2+x/2 , 1+y/2)  = (4, 5)

⇒ 2+x/2 = 4    &  1+y/2  = 5

⇒ 2 + x = 8    &    1 + y = 10

⇒ x = 6          &      y = 9

 Hence,

xy = 6 * 9   = 54