How are you doing? I know this is kind of late, but here goes nothing! Yes, it is a linear equation, you know this because, the input always will result with the same output. Plus, since it has a slope, which is 10 by the way, it also confirms that this is linear! Linear means, that if you put these plots on a line, it will create a straight line! Hope I helped!
The answer is the third option. x and y are both to the first degree so we know it makes a straight line. Next check the ordered pairs to see which set are true in the equation.