6x + y = 1 , y, y, -6x + 1 or 1 - 6x
Tan = opposite / adjacent
tan 74 = 24/7
Method OneYour calculator might be able to do this. Mine does it like this.
6
nCr
2
=
15
Method 2You could simply set up 6C2
This gives you
Method ThreeYou only have to do this a couple of times to see how the cancellation works.
After all the cancellation takes place you have
6*5/2 = 15
Answer:
Y=(x+4)*2-3
=x*2+8x+16-3
=x*2+8x+13
So the standard form is B