If y = 2x + 1, what is y when x = 0?

To find the value of ( y ) when ( x = 0 ) in the equation ( y = 2x + 1 ), you substitute ( 0 ) for ( x ) in the equation.

Starting with the equation:

[ y = 2x + 1 ]

Substituting ( 0 ) for ( x ):

[ y = 2(0) + 1 ]

This simplifies to:

[ y = 0 + 1 ]

Thus, ( y = 1 ).

The correct answer is indeed 1, which corresponds to the choice provided. By substituting ( 0 ) into the equation, it clearly demonstrates how we can evaluate a linear function at a specific point, reinforcing the understanding of function evaluation.