Answer:
A. y = 3 cos (1/2) x.
Step-by-step explanation:
The y-intercept is 3 so it will contain 3 cos x (because y = cos x passes through (0, 1).
The graph of 3 cos x has been stretched horizontally by a factor 2 ( 3 cos x would pass through (π/2, 0) whereas the given graph passes through (π, 0).
So the equation is 3 cos(1/2) x
The first step is to find the slope. Use the slope formula
m = (y2-y1)/(x2-x1)
The two points are (x1,y1) = (-1,5) and (x2,y2) = (2,-1)
So,
x1 = -1
y1 = 5
and
x2 = 2
y2 = -1
will be plugged into the slope formula to get...
m = (y2-y1)/(x2-x1)
m = (-1-5)/(2-(-1))
m = (-1-5)/(2+1)
m = (-6)/(3)
m = -2
The slope is -2
Use m = -2 and one of the points to find the y intercept b. I'll use the point (x,y) = (-1,5) ---> x = -1, y = 5
y = mx+b ... slope intercept form
5 = -2*(-1)+b
5 = 2+b
5-2 = 2+b-2
3 = b
b = 3
The y intercept is 3
-----------------------------------
m = -2 is the slope
b = 3 is the y intercept
Therefore y = mx+b turns into y = -2x+3 as the equation that goes through the two points
I believe it is A. I might be wrong so.
Answer:
There is no correlation.
Step-by-step explanation:
The points are far spread and does not give any correlation.
Answer:
36. m^7
37. x^3 y
38. 6v^5
Step-by-step explanation:
Divide the exponents by the number in the radical sign,
so, If no number is given then divide exponents by 2 eg. question 38
<h3>Explanation </h3>
36. 7√m^49 means m^(49/7) = m^7
37. 3√x^9y^3 means x^(9/3) y^(3/3) = x^3 y
38. √36v^10 means (√36) v^(10/2) = 6v^5 (√36 = 6)
