1: (-1,-1) is (x, y) to see if it is a solution, you would just plug in x and y and see if the equation is true.
-4 (-1) + 2(-1) = 2
4 + -2 = 2
2 = 2 CORRECT
So... plug in x and y in the second equation to Make sure it works for that one too.
-1 + -1 = -2
-2 = -2 CORRECT
So, yes. (-1,-1) is a solution to both equations.
Answer:
Step-by-step explanation:
price after 8 years Amount=P(1-0.18)^8
Amount=16,000(1-0.18)^8
=16,000(0.82)^8
≈3270.63 $
Answer:
Constant of proportionality is y divided by x. y is 2 and x is 4. 2 divided by 4 is 1/2.
Let me know if that is correct.
Step-by-step explanation:
So you do the recipical and multipy 7 by 2 and your fraction is 14/24 and simplify which you get 7/12
