79.5k views
1 vote
Please help me find the missing coordinate (r)

Please help me find the missing coordinate (r)-example-1
User IPO
by
7.7k points

1 Answer

0 votes

Answer:

r = 1

Explanation:

Calculate the slope m using the slope formula and equate to
(1)/(2)

m =
(y_(2)-y_(1) )/(x_(2)-x_(1) )

with (x₁, y₁ ) = (- 1, - 3) and (x₂, y₂ ) = (7, r)

m =
(r+3)/(7+1) =
(r+3)/(8) =
(1)/(2) ( cross- multiply )

2(r + 3) = 8 ← distribute left side

2r + 6 = 8 ( subtract 6 from both sides )

2r = 2 ( divide both sides by 2 )

r = 1

User Terrice
by
8.6k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories