Exercises 143–145 will help you prepare for the material covered ...

Question

Exercises 143–145 will help you prepare for the material covered in the next section. If (x1,y1) = (-3, 1) and (x2, y2) = (−2, 4), find (y2-y1)/(x2-x1)

Accepted Answer

Hey everyone here we are asked to find the slope using the formula the quantity Y sub two minus Y sub one divided by the quantity of X sub two minus X sub one. And now we are given that X sub one, Y sub one is equal to the point negative 15. And we are also given that X sub two, Y sub two is equal to the point negative 59. And so using this information all we have to do is plug it into our slope formula. So in the numerator we have Y sub two which is nine minus Y sub one which is five. And then in the denominator we have X sub two which is negative five minus X sub one which is negative one. And so from here we just have to simplify. So we have nine minus five which gives us four divided by negative five minus negative one which gives us negative four and four divided by negative four is just negative one. Therefore our slope for the line is negative one which gives us answer choice B. Thanks for watching. I hope you found this video helpful and I'll see you again next time.

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Exercises 143–145 will help you prepare for the material covered in the next section. If (x1,y1) = (-3, 1) and (x2, y2) = (−2, 4), find (y2-y1)/(x2-x1)