Ineed to know how to fill in the chart ik how to plug it in it just isn't working out when i'm doing it any ?

Okay so -2 would be where you plot your first point because it is B in the equation. Then you would go up 3 units (Bc it's positive) and to the right one unit (BC it's positive) The three is the same as 3/1 and it is M in the equation which is your slope so that is where I got that number from. So you just continue the pattern of up 3 over to the right 1 until you reach the end of the graph. The slope would be 3 and the y intercept will be the number that is plotted on the y axis

That they are numbers and related to each other.