Which relation is a function? O A. {(7, 8)(5,0)(-3, 1)(-5, 0)(-3, 2)}
B. {(0, 0)(1, 1)(4, 2)(9, 3)(16,4)}
O C. {(-4, 1)(-2, 2.5)(0, 4)(-4, -1)(-2, -2.5)}
OD. {(1, 0)(2, 1)(3, 2)(1, 3)(2, 4)}

sorry can't

step-by-step explanation:

i googled though and something came up but it was in science langueage not common english sooo

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0