The X and Y values are different, they have to be equal and in the right order to be plotted the same.
Answer:
x = 55
Step-by-step explanation:
Given that x varies inversely as y then the equation relating them is
x = ← k is the constant of variation
To find k use the condition x = 11 when y = 15
11= ( multiply both sides by 15 )
165 = k
x = ← equation of variation
When y = 3 , then
x = = 55
Answer:
boys = 250
girls = 150
Step-by-step explanation:
5g = 3b eq. 1
g + b = 400 eq. 2
g = girls
b = boys
From the eq. 2
g = 400 - b
Replacing this last eq. on eq. 1:
5(400-b) = 3b
5*400 + 5*-b = 3b
2000 - 5b = 3b
2000 = 3b + 5b
2000 = 8b
2000/8 = b
250 = b
From eq. 2
g + 250 = 400
g = 400 - 250
g = 150
Check:
from eq. 1
5*150 = 3*250 = 750