What is the value of x when y=10 in the equation y=4x-2

Substitute y for 10 in the equation and solve using these steps:

10=4x+2

1) Minus 2 from both sides

8=4x

2) Divide both sides by 4 (the coefficient of x)

2=x

The value of x is 2 and we can check this by substituting it back into the original equation, 10 = (4*2) + 2.