1. write a rule for the sequence. 3,-3,-9,-15
2 answers:
You might be interested in
A=1/2ab
Replace the variables with their value
15=1/2(3/2)b
Multiply 1/2 and 3/2
15=3/4b
Divide 3/4 on both sides
15/(3/4) is the same thing as
45/4=b
Replace the variables with their value
15=1/2(3/2)b
Multiply 1/2 and 3/2
15=3/4b
Divide 3/4 on both sides
15/(3/4) is the same thing as
45/4=b
Answer:
-18
Step-by-step explanation:
f(x) = x² - 3x -10
f(-10) = (-10)² – 3(-10) – 10
f(-10) = 100 + 30 - 10
f(-10) = 120
f(-5) = (-5)² – 3(-5) – 10
f(-5) = 25 + 15 - 10
f(-5) = 30
=====
The <em>average rate of change</em> is the slope m of the straight line joining the two points.
m = (y₂ - y₁)/(x₂ - x₁)
m = (30 - 120)/(-5 – (-10))
m = -90/(-5+10)
m = -90/5
m = -18
Things we need to keep in mind in order to plot a point :
- x - coordinate of the point shows its distance from origin in horizontal direction.
- y - coordinate of the point shows its distance from origin in vertical direction.
Signs of the coordinates shows which side it lies on.
- if x coordinate is positive then the point lies on right side of y - axis and if it is negative then it lies on left side of y - axis.
similarly,
- if y coordinate is positive then the point lies above the x - axis , and if it's negative then it lies on down the x - axis.
Now, let's proceed ~
First check out its x - coordinate on origin and move up or down according to its y - coordinate and you will get your required point.
So, for point (1 , 0) it has y - coordinate = 0, so it lies on x - axis at the x - coordinate of 1.
