You have to know how long it takes them both to solve the puzzles. ;)
The y intercept is 6. When looking for features like this make sure the y variable is isolated so you can identify them, so in this case you isolate it by subtracting 3x from both sides to get y=-3x+6. The y intercept would be the constant 6.
I guess its 3.5x (edited) .....
Answer:
x = 81
Step-by-step explanation:
√x=9
Solve :
√x=9
(√x)^2 = (9)^2
x = 81
There's a 8ft. long board and the carpenter cut off 3 1/2 and 2 1/3.
So first we need to add 3 1/2 and 2 1/3 because the carpenter cut them off the 8ft. long board.
3+2=5 because it's a whole number. 1/2+1/3= 2/6+3/6= 5/6
5 5/6
Now we subtract
8-5 5/6=
7 6/6- 5 5/6= 2 1/6ft.
2 1/6ft. is what remains of the 8ft. board.