In elimination method you add/subtract both equations to cancel out a variable so you can solve for 1 variable.
since there is +y in the first equation and +y in the second equation, you can subtract both equations from eachother to only be left with x values:
(2x+y=11) (subtract each term)
- (x+y=9)
you get x=2.
now sub in x=2 to any of the 2 equations to find what y is.
2(2)+y=11
y=7
so the answer is (2,7) which means the 2 lines intersect at the point (2,7)
The answer is 369600 feet per hour aka 70mph.
Simply convert 1 mile to feet, then multiply it by 70.
I believe the answer is y=mx+O
hope this helps :)
Answer:

Step-by-step explanation:

Answer:
-10x+23
Step-by-step explanation: