An anonymous survey of college students was taken to determine behaviors regarding alcohol, cigarettes, and illegal drugs. The r
esults were as follows: 866 drankalcohol regularly, 644 smoked cigarettes, 198 used illegal drugs, 408 drank alcohol regularly and smoked cigarettes, 106 drank alcohol regularly and used illegal drugs,113 smoked cigarettes and used illegal drugs, 90 engaged in all three behaviors, and 279 engaged in none of these behaviors.a) how many students were surveyed?
1 answer:
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Answer:
r = - 11
Step-by-step explanation:
Calculate the slope m using the slope formula and equate to - 4
m =
with (x₁, y₁ ) = (4, 5) and (x₂, y₂ ) = (8, r)
m = =
= - 4 ( multiply both sides by 4 )
r - 5 = - 16 ( add 5 to both sides )
r = - 11