Question

If f(x) = 6 - 2x, find x if f(x) = -8.

Answer 1

`{ \tt{f(x) = 6 - 2x}}`

• when f(x) is -8, the whole function equated to -8.

`{ \tt{6 - 2x = - 8}} \\ \\ { \tt{2x = 6 + 8}} \\ \\ { \tt{2x = 14}} \\ \\ { \tt{x = (14)/(2) }} \\ \\ { \underline{ \tt{ \: \: x = 7 \: \: }}}`