Question

Given h(x)=-x+5, solve for x when h(x)=3

Answer 1

x is 2

Explanation:

• When h(x) is 3, the whole functional equation is equated to 3

`{ \rm{ {}^( - )x + 5 = 3 }} \\ \\ { \rm{ {}^( - )x = 3 - 5 }} \\ \\ { \rm{ {}^( - )x = {}^( - ) 2}} \\ \\ { \boxed{ \rm{ \: x = 2}}}`