Question 970866
hich of the following system of linear equations has an infinite number of solutions? 
a. x+3y=10, 4x+12y=40
b. x+y=11, x-y=2
c. x+y=11, 2x-y=6
d. 2x+y=8, 4x+2y=11

Answer: a. x+3y=10, 4x+12y=40
Explanation: The two lines are exactly the same. If we multiply the first equation by a nonzero constant (4) we get the second equation.