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Answer:A
Step-by-step explanation:
Answer:
see explanation
Step-by-step explanation:
We require to find the slope m of the line joining the 2 given points
To find m use the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (2,3) and (x₂, y₂ ) = (1, - 2)
m =
=
= 5
Given a line with slope m then the slope of a line perpendicular to it is
= -
= - ![\frac{1}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B5%7D)
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept ), thus
y = -
x + c ← is the partial equation of the perpendicular line
To find c substitute (- 3, 2) into the partial equation
2 =
+ c ⇒ c = ![\frac{7}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B5%7D)
y = -
x +
← perpendicular equation
Answer: 10D is your answer hope I helped
Step-by-step explanation:
Find common ratio
1 times -3=-3
-3 times -3=9
an=a1(r^(n-1))
a1=first term
r=common ratio
n=which term
an=1(-3)^(n-1)
9th term
n=9
an=1(-3)^(9-1)
an=1(-3)^(8)
an=1(6561)
an=6561
answer is D