Y=sin X is a function because for each value of X, there is exactly one Y value.
The value of x + y is indeterminate. You need the values of both x and y to determine x + y.
In most cases, x is independent and y is dependent. That is, you choose the value of x, but this x-value will decide the corresponding y-value.
It will be 16.
if x:=x(y) then y=0 => x=x(0)
x-y = 120 x+y = 150 add equations: 2x = 270 x = 135 y = 15
15 (x = 135)
15
In expressions such as "x-y", both "x" and "y" can have any value. The value of "x-y" will depend on what the value of "x" and the value of "y" are.
Y=sin X is a function because for each value of X, there is exactly one Y value.
X = 135 and y = 15 Solved by addition and substitution
Let x be the number of boys and y be the number of girls. That gives us two equations: x + y = 150 and .25x + .5y = 49.25. Solve the first equation for x: x = 150 - y. Plug that value of x into the second equation: .25(150 - y) + .5y = 49.25 Solve for y: 37.5 - .25y + .5y = 49.25, .25y = 11.75, y = 47. Thus, there are 47 girls. Plug this value back into the first equation to get the number of boys: x + 47 = 150, x = 103.
If your system is x - y = 120 x + y = 150 I would use elimination. Adding the two equations together gives us 2x = 270 and dividing by two tells us that x = 135. Plug x back into either equation to find y: x + y = 150 135 + y = 150 y = 15 So x = 135 and y = 15.
It depends on the relationship between x and y.
First you need to know that the equation you are looking for is y = kx^2. Then you need to substitute the numbers in: y = kx^2 150 = k5^2 150 = k25 6 = k Now that you know k, resubstitute it for the new value of y when x = 4: y = kx^2 y = (6)(4)^2 y = (6)(16) y = 96
There are more than 1 set of values that will work. The value's of "x = 1" and "y = -1.5" will work and therefore the values "x = 100" and "y = -150" will work as well. In other words take any number you want for the value of x and multiply that number by negative 1.5 (-1.5) to get the value of y. y = (x multiplied by -1.5)
If you mean: x+y = 30 and the value of y is 15 then the value of x is also 15