I think it would be D.
5/9 *5/9 = 25/81
<span>it's correct,</span>
Answer:
a) y=x b)x-1/2y=0 C) x-y=0 d)y=1/2x Answer will be C)x-y=0 edg
Step-by-step explanation:
<span>Simplifying
4n + -19 = 13
Reorder the terms:
-19 + 4n = 13
Solving
-19 + 4n = 13
Solving for variable 'n'.
Move all terms containing n to the left, all other terms to the right.
Add '19' to each side of the equation.
-19 + 19 + 4n = 13 + 19
Combine like terms: -19 + 19 = 0
0 + 4n = 13 + 19
4n = 13 + 19
Combine like terms: 13 + 19 = 32
4n = 32
Divide each side by '4'.
n = 8
Simplifying
n = 8</span>
I think division. I don’t know, I might be wrong. ♀️
Direct variation is y=kx where k is a constant
the fiest way to see if it is direct or not, is if x increases, then y increases as well,
then we see if y=kx is valid, basically if we have a constant of variation
the first one x increase and y increase
see if same constant
y=kx
-4.5=-3k
1.5=k
so
see next one
-1 and 3
-3=-1(k)
-3=-1(1.5)
-3=-1.5
false
not it
2nd is increase and y decrease, so not direct variation
3rd is x is same but y increase so nope
4th is x increase and y increase, now test the constant
-7.5=-3k
2.5=k
-1 and -2.5
-2.5=-1k
-2.5=-1(2.5)
-2.5=-2.5
true
answer is last option