Description
1. Find the constant of variation for the relationship f(x)= 50x.
x
f(x)
5
50
5
9
15
27
5. Which does not show a direct variation between x and y?
Y=4/x
Y=0.5x
Y=7x
7=x/9
3. What is the direct variation equation if f(x) varies directly with x and f(x) = –18 when x = 3?
f(x) = -1/6 x
f(x) = –3x
f(x) = –6x
f(x) = –15x
Explanation & Answer
1. 50 is the constant of variation in f(x) = 50x
4. f(9) = 45, which means constant = 5, so when f(x) = 5x, f(3) = 5(3) = 15
5. y=4/x does NOT show a direct variation of y and x because x is in the denominator of a fraction and therefore, x is INVERSELY RELATED to y.
3. If f(x) = -18 when x= 3, then f(x) = -6x since -18/3 = -6
Hope I included all of the steps you needed.
Review
Review
24/7 Homework Help
Stuck on a homework question? Our verified tutors can answer all questions, from basic math to advanced rocket science!
Similar Content
Related Tags
Fools Crow
by James Welch
A Wrinkle as Time
by Madeleine L'Engle
Where the Crawdads Sing
by Delia Owens
Orphan Train
by Christina Baker Kline
The English Patient
by Michael Ondaatje
The Kite Runner
by Khaled Hosseini
We Were Eight Years in Power
by Ta-Nehisi Coates
The Curious Case of the Dog in the Night Time
by Mark Haddon
The Book Thief
by Markus Zusak