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tw101
 one year ago
How do I prove that when two points are connected create a positive or negative slope?
I have to prove points: (2,5)(12,19) make a positive line.
And then points (21,5)(12,19) create a negative line.
But im not sure how to prove it.
tw101
 one year ago
How do I prove that when two points are connected create a positive or negative slope? I have to prove points: (2,5)(12,19) make a positive line. And then points (21,5)(12,19) create a negative line. But im not sure how to prove it.

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Mertsj
 one year ago
Best ResponseYou've already chosen the best response.1Do you know the slope formula?

tw101
 one year ago
Best ResponseYou've already chosen the best response.0is it the m= y2y1/x2x1?

Mertsj
 one year ago
Best ResponseYou've already chosen the best response.1yes. Just use that on each pair of points to show that one slope is positive and the other negative.

tw101
 one year ago
Best ResponseYou've already chosen the best response.0okay, for the positive slope points I got 7/5 when I plugged the points into the formula

Mertsj
 one year ago
Best ResponseYou've already chosen the best response.1Me too. Go for the next one.
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