Which relation is a function? O A.
{(5,2), (-2,-8), (7, -1) (-2, 6)}
B.
{(7, 1), (4,2), (4,-4), (7,3)}
C.
{(6,5), (3, 2), (6,4), (5,8)}
O D.
{(6,-4), (5, 8), (3,6), (-4,-4)}

Solve the system by the elimination method. 2x + y - 4 = 0 2x - y - 4 = 0 when you eliminate y, what is the resulting equation? a.x = 0 b.4x = -8 c.4x = 8

Ineed to learn how to solve this problem

Which of the following is the equation that says that the product of a number and ten is equal to 20 percent of that number ? a) 10n= 2.0n b) 10+n=.20n c) n+ .20n=10 d) 10n=0.20n