\[y = 4x - 2\]
\[y = 0:\ \ \]
\[4x - 2 = 0\ \]
\[x = 0,5.\]
\[y = 2:\ \ \]
\[4x - 2 = 2\]
\[4x = 4\]
\[x = 1.\]
\[y = - 7:\ \ \]
\[4x - 2 = - 7\]
\[4x = - 5\]
\[x = - 1,25.\]