Question

Which ordered pair(s) are solutions to 3x-y=1? Select ALL that apply.

(-2,-7)
(-1, -14)
(0.1)
(3,8)

Answer 1

Answer: pair 1 and pair 4 are solutions.

Step-by-step explanation:

3x-y=1

pair 1:
3(-2)-(-7)=1
-6+7=1
1=1

yes, pair one is a solution.

pair 2:
3(-1)-(-14)=1
-3+14=1
11=1


no, pair 2 is not a solution.

pair 3:
3(0.1)-(0.1)=1
0.3-0.1=1
0.2=1

no, pair 3 is not a solution.

pair 4:
3(3)-(8)=1
9-8=1
1=1

yes, pair 4 is a solution.