Yes it is a function. In standard form it is y=x-4.
x = 0 and y = 4
4
The solution to this equation is that h is equal to -4. You can substitute this value for h into the equation to get -4 x -9 - 6 plus 12 x -4 plus 40 equals 22, or 36 - 6 plus - 48 plus 40 equals 22.
Yes, a linear equation in t.
-4 + 7 = 3
An equation where x equals 3.
y=x+4
A simple equation, true when w = -4
It is an equation and the value of x is 4
It is a linear equation in the variable z.
It is an equation and the value of x is 1
It is an equation and the value of x is 4