herrera21
herrera21
20-09-2017
Mathematics
contestada
I need a little help understanding these?
Respuesta :
choixongdong
choixongdong
20-09-2017
when x = 2 then f(x) = 2^2 +2(2) -1 = 4 + 4 - 1 = 7
when x = 3 then f(x) = 3^2 +2(3) -1 = 9 + 6 - 1 = 14
when x = -3 then f(x) = (-3)^2 +2(-3) -1 = 9 - 6 - 1 = 2
(-3,2) (2, 7) and (3,14)
answer
Pairs
2 ------> -3
14 ------> 3
7 ------> 2
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