Hi Shelly

To determine the straight line that graphs an

equation, you need to determine 2 points that satisfy the equation and so lie on the line, correct?

If you do not understand that sentence, please say so because otherwise we going to go nowhere fast.

If you are OK, please note that you have TWO equations. You need to graph both of them individually. That means you have to calulate two points that satisfy one equation, draw the graph for that equation, and then repeat the process for the other equation. If the two lines are different, there will either be one point or no point where they intersect. If there is a single point of intersection, that point satisfies BOTH equations because it lies on BOTH lines. Make sense now?

(If the lines are different but do not intersect, there is no solution. If the lines are the same, every number is a solution. It is when the lines are different but intersect that there is a unique solution.)

If you do not understanf my explanation, please ask more questions.

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