\( 17x + 15y = 11 \) आणि \( 15x + 17y = 21 \), तर \( x - y \) ची किंमत काय आहे?
The relationship between two variables \( x \) and \( y \) is given by \( x + py + q = 0 \) and is shown in the figure. Find the values of \( p \) and \( q \). Note: The figure shown is representative.

Study the entries in the following table and rewrite them by putting the connected items in the single row: 