To find the value of x using the equation y = 5x when y is 4, we can substitute y with 4 and solve for x:
4 = 5x
Now, to solve for x, divide both sides by 5:
x = 4/5
So, when y is 4 in the equation y = 5x, the corresponding value of x is 4/5.
Hope this helps you, crazystitch.
willkiddhill