Pls help me and show world pls :)

add equation 2 from equation 3

Step-by-step explanation:

So, we are given equations 1, 2, and 3, but for this problem, we need to use just 2 and 3.

4x - 2y = -16

x + 2y = 6

In order to eliminate one variable, then we need to find whether there are two numbers that have the same coefficient (or multiply one by a number to make it) so that if you add/subtract two numbers, it gives you 0. So, in this problem, if you add

2y to -2y, then it gives you 0, which means that y would be canceled out.

So, the answer is the first option.

Feel free to ask any questions about clarity! (this explanation is pretty bad, but  I can explain it more if you want) :D

this linear equation would have just one solution.

step-by-step explanation:

the reason why this would have one solution is that it is an expression with just one variable. since that variable is not raised to a power, it will always have just one solution.

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.