Question

Determine ocoeficiente angular ou dedividade da reta que passa pelos pontos pontos
A)a(9,2) e B (-3,-2)
B)a(8,3) e B(-16,12)
C)P(25,4) e Q(-10,-15)
D)M(300,100) e N(430,93​)

Answer 1

Resposta:

a) A(9,2) e B (-3,-2)

b) B(8,3) e B(-16,12)

c) P(25,4) e Q(-10,-15)

d) M(300,100) e N(430,93​)

Seja m o coeficiente angular

$m=\frac{y_B-y_A}{y_B-y_A}\\\\a)m=\frac{-2-2}{-3-9}=\frac{-4}{-13}=\frac{4}{13}\\\\b)m=\frac{12-3}{-16-8}=\frac{9}{-24} =-\frac{3}{8} \\\\c)m=\frac{-15-4}{-10-25}=\frac{-19}{-35}=\frac{19}{35} \\\\d)m=\frac{93-100}{430-300} =\frac{-7}{130}$