In a problem like this, you have the see it as two separate problems before you can complete it. I’ll show work but I want to use words to maybe help you understand for the future. So split them apart to become (-x+3) as the first step and leave that alone for now. Then look at -(x-5). With the variable in place, you need to think of the subtraction sign as a negative integer and distribute it to the variables in the parentheses. The negative combines with the x to make a -x and the negative combines with the -5 to make a positive five. So now we have -x+5 After you complete that first part, you can pull the first part back and start to combine them. -x+3-x+5 becomes -2x+8. Now here’s the work part. (-x+3)-(x-5) (-x+3) (-x+5) -x (+) -x = -2x 3+5 = 8 -2x+8 is the final answer
There is no exact rule for lines of best fit. However, in general, there should be roughly the same amount above as below. So, if we are following this rule, there should be about 4 below as well.
