(please help) There are 251 students from Mason Middle School going on a feild trip. The students will be riding on buses that h
2 answers:
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Answer:
r = - 2
Step-by-step explanation:
Calculate the slope m using the slope formula and equate to
m =
with (x₁, y₁ ) = (- 9, - 3) and (x₂, y₂ ) = (- 2, r)
m = , that is
=
( cross- multiply )
7(r + 3) = 7 ( divide both sides by 7 )
r + 3 = 1 ( subtract 3 from both sides )
r = - 2