Answer:
C.
Step-by-step explanation:
Each of the graphs is clearly a straight line, apart from graph C. Graph C is a parabola.
y = kx
'k' is the constant of proportionality, or otherwise known as constant of variation.
y = 90
x = 3
90 = k(3)
90 = 3k
3k/3 = 90/3
k = 30
The constant of proportionality is 30.
4,880,000
hope that helps!!
Answer:
Go here maybe it will help:
Domain and Range - MathBitsNotebook(A1 - CCSS Math)
Step-by-step explanation: