Which of the following correctly describes the domain of the function shown
below?
r(x) = 2x/x^2-1

y=mx+b

step-by-step explanation:

m is slope, b is y-intercept

thats not a system of equations, that is a solution

m∠abd = m∠dbc

step-by-step explanation:

given : ab bisects ∠dbc

as we know that bisection means ab divides   ∠dbc   in two equal angles named as   ∠dba and   ∠abc

so, m∠abd = m∠dbc  

because ab bisects ∠dbc.

hence , the first statement m∠abd = m∠dbc is true.