Question
Mathematics Question on Equations
The joint equation of the straight line x + y =1 and x-y = 4 is
A
x2-y2 = -4
B
x2-y2 = 4
C
(x+y-1)(x-y-4)=0
D
(x+y+1)(x - y +4)=0
Answer
(x+y-1)(x-y-4)=0
Explanation
Solution
The correct answer is(C): (x+y-1)(x-y-4)=0