pair-st-lines

Question: The joint equation of the straight lines $x+y=1$and $x-y=4$is

1) ${{x}^{2}}-{{y}^{2}}=-4$

2) ${{x}^{2}}-{{y}^{2}}=4$

3) $(x+y-1)\,(x-y-4)=0$

4) $(x+y+1)(x-y+4)=0$

Solution:

Explanation: No Explanation

Equation of pair of straight lines

Rate this question:

★ ★ ★ ★ ★

Average rating: (0 votes)