Can someone please explain how to solve this problem? Thanks.
Determine whether y varies directly with x. If so, find the constant of variation k and write the equation.
Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga.
Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus.
Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
no y does not varie as x
x/y should = to x in all examples
how does it not vary with x, how do i check it myself
Not the answer you are looking for? Search for more explanations.
y varies directly with x
y= k x
where k is some constant number.
This is one of the simplest equations you will meet.
if you have an (x,y) pair, you can replace the x and y in the equation and solve for k:
for the first entry in your table, you have x=4 and y is 6.4
replace y with 6.4, and x with 4 in y = k x to get
6.4= k * 4
divide both sides by 4:
6.4/4 = k * 4/4
k= 6.4/4 = 1.6
so your direct variation equation is
y= 1.6 x
if the other pairs in your table "work" then you can say they all have the same equation, and y varies directly with x (with k= 1.6)
can you test the other (x,y) values in your table ?
yes, just give me a moment please
all x*1.6 equals the y values in the chart so y DOES directly vary with x, right?
thank you so much, i think its easy now :D
sorry it was my calcuation error....i did a calcualtion error for 13 and 20.8