Because when you distribute you multiply the term outside of the parenthesis individually with everything inside the parenthesis. So, it should look like this:
The correct answer is A because 2 distributed to x so x equals 1 it is still 2 but take away the x so it is 2x do the same for y= 2y and then 2x3 = 6 so 2x+2y+6
Perpendicular lines<span> are two or more lines that intersect at a 90-degree angle, like the two lines drawn on this graph, and the x and y axes that orient them.</span>
