Question

Which ordered pair is a solution of the equation y = 3x? A. (–2, –9) B. (–8, –18) C. (–8, –3) D. (–10, –30)

Answer 1

We are given with an equation and is asked to identify a point that passes through the line. Since there is no other equation given, to answer this problem, we use substitution. By substituting each point to the given equation, the answer then is D. (–10, –30)

Answer 2

y=3x
D. (-10, -30)
Replacing in the equation;
x=-10
y=3(-10)
y=-30