`x + y = 5` State whether each equation or function is linear. Write yes or no. If no, explain your resoning.
Any function is called linear if the power of the unknown terms in the eqaution is 1.
Thus, the given equation x+y = 5 is linear because the power of the unknown terms x & y in the equation is 1.
Any linear equation is of the form "y = mx + b". By subtracting x from each side of the given equation, we get "y = -x + 5", satisfying what is required.