Question

Somebody please help meeeee pt.2​

Answer 1

See explanation

Explanation:

Consider the sequence 10, 6, 2, -2, -4, ...

Rewrite it as

`a_1=10,\\ \\a_2=6,\\ \\a_3=2,\\ \\a_4=-2,\\ \\a_5=-6,...`

The points on the coordinate plane are

`(1,a_1),\ (2,a_2),\ (3,a_3),\ (4,a_4),\ (5,a_5),...` (see attached graph).

Since

`4=a_2-a_1=a_3-a_2=a_4-a_3=a_5-a_4=...,` given sequence is arithmetic.