The statement "y varies inversely as x means that when x increases, y decreases by the same factor. In other words, the expression xy is constant :
x*y = k
k is the variation constant.
Just substitute the values in that formula :
16*9 = 4*4*9 = 172.
So the variation constant here is 172.
In order to find the equation of variation of y, you should change the equation i gave you.
y = k/x
y= 172/x
Hope this helps !
Photon
Answer:
Option D, Yes, Devon should have evaluated f(3)
Step-by-step explanation:
f(x) = x^3 + x^2 − 10x + 8
<u>Step 1: Evaluate using F(3) NOT f(-3)</u>
f(3) = 3^3 + 3^2 - 10(3) + 8
f(3) = 27 + 9 - 30 + 8
f(3) = 14
Since the factor is (x - 3) the x value is x - 3 + 3 = 0 + 3 -> x = 3 not x = -3
Answer: Option D, Yes, Devon should have evaluated f(3)
Answer:
C
Step-by-step explanation:
Your answer would be b,
you can use desmos and type the two equations in and graph for you :)
Answer: Sally recieves £60 more than Megan
Step-by-step explanation:
Add the ratio together 1+3+2=6
£180 divided by 6 = 30
Megan gets 30
Sally gets 30x3=90
Tom gets 30x2=60 30:90:69