I am not sure if I understand the question that clearly but if what I think is correct is that you need to prove that 2 and 1 are a system of equations for the following equations so this is how you do that:

With the coordinates (2,1) 2 will be x and 1 will be y because when dealing with coordinates (x,y) is how they are set up.

Next you substitute into the equations and solve:

(2) + 3(1) = 5 and 1 = -(2)+3

So now you find if the equations are true

2 + 3 = 5 so (2,1) is a solution for this equation

-2 + 3 = 1 so (2,1) is also a solution for this equation

So in conclusion (2,1) is a solution of the system of equations

Hope this helps :)

4 0

3 years ago

The ratio of apples to orgens is 1 to 3

-BARSIC- [3]

Because the ratio is 1 to 3. It means that For every one apple there are 3 oranges. So If there are 2 apples, there would n 6 oranges. If there are twelve apples, there would be 36 oranges. To find the number of oranges for the amount of apples, just multiply the number of apples by 3.

8 0

4 years ago