For this problem, I'm assuming you need help figuring out what quadrants contain which positive and negative plot points, and I can certainly help with that.
I have attached a quick little drawing I did of the different quadrants' labels and their corresponding positive and negative numbers, if that makes any sense. Keep in mind that when you cross the y-axis (the vertical one) from the right to the left side, your x-value will be negative. Same goes for the y-value, except it will be positive on the top and negative on the bottom.
Hope this helped you out! Feel free to ask any additional questions if you have any, or if you still need help figuring out which point on your worksheet goes in which quadrant. :-)
If two expressions are equal to each other, and you add the same value to both sides of the equation, the equation will remain equal. When you solve an equation, you find the value of the variable that makes the equation true. In order to solve the equation, you isolate the variable.