Answer:
b. -x + y = 0
Step-by-step explanation:
<u />
<u>Direct variation</u>:
Direct variation means "y varies directly as x”:
where k is the (non-zero) constant of variation.
To determine which of the given equations represents a direct variation, isolate y for each and compare with the <u>direct variation equation</u>.
<u>Equation a</u>
This is not a direct variation equation as there is an addition of -2.
<u>Equation b</u>
This is a direct variation equation where the constant of variation is 1.
<u>Equation c</u>
This is not a direct variation equation as y is <u>inversely proportional</u> to x.
<u>Equation d</u>
This equation does not include the variable x, and so is therefore not a direct variation equation.
Answer: hello your question is disorganized attached below is the question and solution
answer:
1) The system has a unique solution ( x = 0, y = 0 ) ( D )
2) The system has a unique solution ( x = 0, y = 3, z = 3 ) ( D )
Step-by-step explanation:
1 ) ![\left[\begin{array}{ccc}1&0\\0&1\\0&0\end{array}\right] \left[\begin{array}{ccc}0\\0\\0\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%260%5C%5C0%261%5C%5C0%260%5Cend%7Barray%7D%5Cright%5D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D0%5C%5C0%5C%5C0%5Cend%7Barray%7D%5Cright%5D)
this matrix is a homogenous since there are three(3) equations and 2 variables
hence the system has a unique solution ( attached below )
2) Attached below
The matrix is a Non-homogenous system since it comprises of three(3) equations and 2 variables
Answer:
1: 
and the same, but its -3 instead of 3
2: x=9-3y
Answer:
Box of Popcorn: $3.00
Drink: $2.00
Step-by-step explanation:
If we input the prices into the original problem it would be something like this, (2)3.00 + (3)2.00 = $12.00 (3+3 = 6 and 2 + 2 + 2 = 6 6+6= 12) Or 2x + 3x = $12
And you would do the same thing for the second one.
(3)3.00 + (5)2.00 = $19.00 ( 3 + 3 + 3 = 9 and 2 + 2 + 2 + 2 +2 = 10 10+9= 19) Or 3x + 5x = $19
Sorry if it's incorrect but i hope it helps!
Hi there, just do 15/12*100% and that would equal 125%
