(i) x+y=5, 2x+2y=10 (ii) x–y=8,  3x–3y=16 (iii) 2x+y–6=0, 4x–2y–4=0 (iv) 2x–2y–2=0, 4x–4y–5=0

i) intersecting lines (ii) parallel lines (iii) coincident lines

(i) 5x–4y+8=0.         7x+6y–9=0         (ii) 9x+3y+12=0                           18x+6y+24=0 (iii) 6x–3y+10=0         2x–y+9=0

(i) 10 students of Class X took part in a Mathematics quiz. If the number of girls is 4 more than the number of boys, find the number of boys and girls who took part in the quiz. (ii) 5 pencils ...