The pairs of equations x+2y-5 = 0 and -4x-8y+20=0 have:
A. Unique solution
B. Exactly two solutions
C. Infinitely many solutions
D. No solution
Answer:C
The pairs of equations x+2y-5 = 0 and -4x-8y+20=0 have:
A. Unique solution B. Exactly two solutions C. Infinitely many solutions D. No solution
Explanation: a1/a2 = 1/-4