She must have multiplied it by 5.
That would've given her:
x - y = 15
2.5x + y = 25
Now we can add them and the y-terms will eliminate each other. Because one is -y, and the other is positive y. -y + y = 0.
ah, those are systems you want one variable to cancel out. I would time the bottom equation by -1 so x cancels then u solve for y. then u plug all back in to solve for x.
Answer:
A.
Step-by-step explanation:
To find the inverse of a function, first make f(x) a y
So,
y = 
-18
Then switch the x and the y
x = 
- 18
Solve, for y
Answer:
A & D for sure. Probably B
Step-by-step explanation:
Students don't own their homes. Homeowners in your neighborhood might not meet the definition of Random.
