Had been coaching Is which tense

Past tense

(You can tell it's past tense because it has the word HAD in it. It means it's already been done.)

If it were present tense, it would say "Being coached", and if it were future tense it would say "Will be coaching."

Hope this helps! :)

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4

ok i am here, i brought some cookies and some movies. do you use blu-ray cuz thats all i brought. oh, and my friend wwill be here shortly, he is going to bring some pizza too.