4) -6x + 5y = 1
6x + 4y=-10

(-1,-1)

Step-by-step explanation:

-6x + 5y = 1

6x + 4y=-10

Add the two equations together

-6x + 5y = 1

6x + 4y=-10

9y = -9

Divide each side by 9

9y/9 = -9/9

y = -1

Now find x

6x +4(-1) = -10

6x -4 = -10

Add 4 to each side

6x -4+4 = -10+4

6x = -6

Divide each side by 6

6x/6 = -6/6

x = -1

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3