Question

when the input is If y = 4x - 3, the output is X=1.

Answer 1

we have

y=4x-3

In this problem

the input is the variable x (independent variable)

the output is the variable y (dependent variable)

we have

For x=1 (input value)

substitute in the equation

y=4(1)-3

y=1

therefore

the output is 1