Question

1. If. 4x + 4y = 18 and x = 2, what is the value

of 2y?
(A) 5
(B) 7
(C) 9
:--- (D)-10-
(E) 16

Answer 1

A would be the answer.
4(2) + 4y = 18
8 + 4y = 18
-8 -8
4y = 10
– –
4y 4

Y = 2.5

2(2.5) = 5

Answer 2

Explanation:

4x + 4y = 18

now we're going to carefully divid both sides by 2

2x + 2y = 9

now make 2y the subject

2y = 9 - 2x

= 9 - 2 × 2

= 9 - 4

2y = 5