Question

a questão da reta q passa pelos pontos m(1,-2) n(-2,-11):

Answer 1

Ola Karoline

m(1,-2) e n(-2,-11) 

f(x) = ax + b

f(1) = a + b = -2
f(-2) = -2a + b = -11

3a = 9
a = 3

3 + b = -2
b = -5

f(x) = 3x - 5

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