Use desmos, great and helpful app
We are given
(a, b) ---------------> (a, −b)
we can see that
x-values of both points are 'a'
which is same
while y-value of first =b
y-value of second =-b
so, y becomes as -y
and we know that
when a function is reflected about x-axis
then y becomes -y
so, option-C.................Answer
14*4=56+1 for the 40 cents = 57 is your Answer
Constant of Variation has this formula for Direct Variation.
y = kx
Where y = cost in dollars; x = length in meters; k = constant
We will use the formula for direct variation because the problem states that the cost varies directly to the length.
In the problem we need to get the constant of variation.
k = y/x
k = $4500 / 200 meter
k = $22.50 cost per meter.
A.) The equation relating C and s is:
k = C/s
* i just substituted C for y and s for x.
B.) The constant of variation represents the additional cost that the company will pay for every meter in length they add. which is $22.50 per meter.
C.) y = kx ; substitute C and s to y and x respectively;
C = ks
C = $22.50 * 700 m
C = $15,750
50.7 miles per hour
Hope This Helps and God Bless!
