Answer:
And the real value for this case is y=14. The residual is defined as:
Replacing we got:
And the best answer would be:
-2
Step-by-step explanation:
For this case we know that the best fit line for the relationship between x and y is given by:
And we know that an individual in the dataset has a score of 10 on the x-variable and a score of 14 on the y-variable. So then we can find the estimated value like this:
And the real value for this case is y=14. The residual is defined as:
Replacing we got:
And the best answer would be:
-2
Answer:
Verizon Wireless offers better plan
Step-by-step explanation:
Now it is easiest to calculate an yearly cost for both companies.
First calculate cost for Verizon
If y is annual payment and x is monthly payment
Relation is
y = 20 + 12x
y = 20 + (12)(20)
y = 260
So for Verizon wireless, annual amount is $260
Now calculate cost for Consolidated Communication
If y is annual payment and x is monthly payment
Relation is
y = 10 + 25x
y = 10 + (12)(25)
y = 310
So for Consolidated Communication, annual amount is $310.
Here by comparison we can see that the offer of Verizon Wireless is better in long term.
Answer:
dy/dx= 7- 3x^-1/2
when X=1
dy/dx = 4
as it is a tangent M1=M2=4
now,
at gradient 4 and point (1,1)
equation of curve is ,
y-y1= m(x-x1)
or, y-1=4(x-1)
or, y-1=4x-4
or, y-4x= -3
or, 4x-y=3
Answer:
80 degrees
Step-by-step explanation:
Answer:
y = -2x - 9
Step-by-step explanation:
so we have our two points, (-4,-1) and (-8,7) What we need to do to find our slope is y2 - y1 over x2 - x1. Once plugging in the numbers and subtracting it should give you 8/-4. 8 divided by -4 is -2. m = -2. Now to find our "b" we plug in our slope, and plug in one of the two points into the format of y = mx + b.
-1 = -2(-4) + b
multiply -2 and -4
-1 = 8 + b
we subtract 8 from itself and -1
-9 = b
Our equation is y = -2x - 9
