Which ordered pairs are solutions to the equation?

y = 2x + 5

A.
(5, 10) and (2, 9)

B.
(5, 15) and (9, 2)

C.
(15, 5) and (2, 9)

D.
(5, 15) and (2, 9)

Question

Which ordered pairs are solutions to the equation? 
 
y = 2x + 5
 
 A.
(5, 10) and (2, 9)
 
 B.
(5, 15) and (9, 2)
 
 C.
(15, 5) and (2, 9)
 
 D.
(5, 15) and (2, 9)

skullpatrol · Answer

Any ideas?
:-)

anonymous · Answer

no

anonymous · Answer

Hey there!

anonymous · Answer

The best way to find the solutions to the equation is to plug in the points in the answer choices!

skullpatrol · Answer

What does a solution mean to you @plaguex?

anonymous · Answer

an answer

skullpatrol · Answer

Yes, but the answer must be true, right?

anonymous · Answer

yes

anonymous · Answer

I'll do one for you:

(5,10)

That is in the form of (x,y)

so substitute x = 5, and y = 10

10 = 2(5) + 5
10 = 10 + 5
10 ≠ 15

So that means (5,10) is NOT a solution to y = 2x + 5.

We can then go ahead and cross out all the answer choices that have (5,10) in it!

skullpatrol · Answer

Ok, substitute the values into the given equation and find the one that gives a true statement

anonymous · Answer

Go ahead and see if (2, 9) is a solution to the equation. :)