Question

How do you know (2, 1) is a solution to 4x+y=9?

Select all that apply.

1.[] The coordinate lies on the line
2.[] When substituting x=2 and y=1 into the equation, you get a true statement .
3.[] (2,1) is a positive and so is all the numbers in the equation
4.[] 9-4=5 and 2(2)+1=5​

Answer 1

2. When substituting x=2 and y=1 into the equation, you get a true statement.

Hope this helps you.