Answer is: -5 - 2(5) = -15
-5 - 2(5) = ?
With 2x-4 given to you, you can substitute x (input) and solve with that input to get y (output).
Ex. 2(0)-4=-4, (0, -4)
2(1)-4=-2, (1, -2)
2(2)-4=0, (2, 0)
547.9 is the answer to this
yes because 2*3 equals 6 and 7*3 equals 21, which gives you equal proportions
9514 1404 393
Answer:
(x, y, z) = (1/3, 2/3, 1)
Step-by-step explanation:
We can use the first equation to write an expression for x that can be substituted into the other equations.
x = 1 -y
2(1 -y) -y +z = 1 ⇒ -3y +z = -1
(1 -y) +2y +z = 8/3 ⇒ y +z = 5/3
Subtracting the first of these equations from the second gives ...
(y +z) -(-3y +z) = (5/3) -(-1)
4y = 8/3
y = 2/3
z = 5/3 -y = 1
x = 1 -y = 1/3
The solution is (x, y, z) = (1/3, 2/3, 1).
