book Maths Puzzle Numerical Ability

what is the slope if the line is -1/2 and it passes through the point (1,2)?

Read Solution (Total 0)

book Other Question

Multiply

7w(2w-3w)(2w+3)
(14w-21w)(2w+3)
-4w times 2w + 3
-8w + 3

Can someone tell me if this is correct
working with Real numbers.
I need help with this problem:
3s + (-1/2)[6 + 24(-1/3 + 1/4s)
please show your work and write it out how you did it in sentences so i can understand.
thanks alot