Which of the following ordered pairs satisfy the equation below?

Check all that apply.

y = -4x
(3, -1)
(-5, 20)
(-1, -4)
(-6, -10)
(2, -8)
(8, -32)

Question

Which of the following ordered pairs satisfy the equation below?

Check all that apply. 

y = -4x
(3, -1)
(-5, 20)
(-1, -4)
(-6, -10)
(2, -8)
(8, -32)

callisto · Answer

you can simply put the x coordinate into -4x and see if it give the y coordinate of each order pair. If it does, the ordered pairs satisfy the equation

anonymous · Answer

idk how to do that

callisto · Answer

for example, for the first order pair (3, -1)
put x=3 into -4x and you'll get -4(3) = -12.
It is not equal to -1 as in the order pair,  therefore, it does not satisfy the equation.
Can you try the second one?

anonymous · Answer

i really dk how to do this at all

callisto · Answer

can you try first? just follow my workings.. it won't waste you an hour to try once..