2 years ago

Which point below would you use with the point (-2, -5) to get a line with a slope of -1?

Mathematics

2 answers:

Lyrx [107]2 years ago

7 0

Answer:

(-1,-6)

Step-by-step explanation:

frosja888 [35]2 years ago

3 0

Answer:

(-1, -6)

Step-by-step explanation:

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Write the explicit formula for the geometric sequence.<br><br> a1 = -5 a2 = 20 a3 = -80

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$a_1 = -5;\ a_2 = 20;\ a_3 = -80 \\\\a_2:a_1=r\ and\ a_3:a_2=r\\\\r=20:(-5)=-4\ check\ r=-80:20=-4\\\\a_n=a_1r^{n-1}\to a_n=-5\cdot(-4)^{n-1}=-5\cdot(-4)^{-1}\cdot(-4)^n\\\\=-5\cdot\left(-\dfrac{1}{4}\right)\cdot(-4)^n=\dfrac{5}{4}\cdot(-4)^n\\\\Answer:\boxed{a_n=-5\cdot(-4)^{n-1}\ other\ a_n=\frac{5}{4}\cdot(-4)^n}$