A line that includes the points ( - 9,3) and ( - 8,s) has a slope of - 8. What is the value of s?

Question

please help im drowning in questions and i cant get past this one 

Answer 1

Delayana

 

Slope is calculated as

 

y₂-y₁        s-3

------ =    -------- 

x₂-x₁     -8-(-9)

 

(s-3)/1 = -8

 

s-3 = -8

s = -5

Answer 2

Hello, thank you for taking the time to post your question!

The underlying slope equation that you want to use here is m=(y2​−y1​)/(x2​−x1​) … for this set of values that means

−8=(s−3) / (−8−−9)

Solving that algebraically for the value of “s” yields

−8=(s−3)/1

−8=s−3

−8+3=s

−5=s

I hope that helps you get moving in a better direction on this type of question! Feel free to reach out if you have any additional questions beyond that :)

Answer 3

m = (y₁ - y₂) / (x₁ - x₂)          definition of slope

-8 = (3 - s) / (-9 - (-8))          substitution

-8 = (3 - s) / -1                     combine

8 = 3 - s                                multiply both sides by -1

5 = -s                                   subtract 3 from both sides

-5 = s                                   multiply both sides by -1