Question

What is a solution to the equation y=3x+1?
A. (3,10)
B. (2,6)
C. (1,5)
D. (0,3)

Answer 1

i think its D

Answer 2

Let's plug in a random answer choice. I'm going to pick choice C

(1,5) means x = 1 and y = 5


y=3x+1

5=3*1+1 ... replace x with 1, replace y with 5

5 = 3+1

5 = 4 ... this is false


Since "5 = 4" is false, this means y=3x+1 is false when (x,y) = (1,5)

So (1,5) is NOT a solution. If it were a solution, then it would make y=3x+1 true

All of this allows us to rule out choice C. Do the same for the other choices.

Answer 3

A