Question

The sequence 9;x; -15;y forms an AP. Find
the values of x and y.​

Answer 1

Answer:

x = - 3; y = - 27

Step-by-step explanation:

$a_{n}$ = $a_{1}$ + (n - 1)d

$a_{3}$ = 9 + 2d = - 15 ===> d = - 12

x = 9 + (- 12) = - 3

y = - 15 + (- 12) = - 27