[" 71.The straight lines "7x-2y+10=0" and "7x+2y-10=0],[" form an isosceles triangle with the line "y=2." The area "],[" (sq.units) of this triangle is equal to "]

The straight lines 7x-2y+10=0 and 7x+2y-10=0 form an isosceles triangle with the line y=2. The area of this triangle is equal to (15)/7s qdotu n i t s (b) (10)/7s qdotu n i t s (18)/7s qdotu n i t s (d) none of these

The straight lines 7x-2y+10=0 and 7x+2y-10=0 form an isosceles triangle with the line y=2. The area of this triangle is equal to (15)/7s qdotu n i t s (b) (10)/7s qdotu n i t s (18)/7s qdotu n i t s (d) none of these

The straight lines 7x-2y+10=0 and 7x+2y-10=0 form an isosceles triangle with the line y=2. The area of this triangle is equal to (a) (15)/7s qdotu n i t s (b) (10)/7s qdotu n i t s (c) (18)/7s qdotu n i t s (d) none of these

The straight lines 7x-2y+10=0 and 7x+2y-10=0 form an isosceles triangle with the line y=2. The area of this triangle is equal to(a) (15)/7s qdotu n i t s (b) (10)/7s qdotu n i t s (c)(18)/7s qdotu n i t s (d) none of these

The straight lines 7x-2y+10=0 and 7x+2y-10=0 form an isosceles triangle with the line y=2. The area of this triangle is equal to (15)/7s qdotu n i t s (b) (10)/7s qdotu n i t s (18)/7s qdotu n i t s (d) none of these

Show that the straight lines x+y=0, 3x+y-4=0 and x+3y-4=0 form an isosceles triangle.

Show that the lines x-7y-22=0, 3x+4y+9=0 and 7x+y-54=0 form a right angled isosceles triangle.

If a straight line perpendicular to 2x-3y+7=0 forms a triangle with the coordinate axes whose area is 3 sq. units, then the equation of the straight line(s) is