Question

For each function, y varies directly with x. Find each constant of variation. Then find the value of y when x= -0.3.

14. Y= 7 when x=2

Answer 1

y=kx
7=2k
k=\(\dfrac{7}{2}\)

\(y=kx, k=\dfrac{7}{2},x=-0.3\\y=\dfrac{7}{2}*-0.3=-1.05\)

Answer 2

I'm so confused ^^^ ☹

Answer 3

when y varies directly with x, it means there's some constant (a number) k that when multiplied to x gives us y

y=kx
we know that Y= 7 when x=2
we plug that in and solve for k

Answer 4

So I do 7= k (2) ?

Answer 5

Wait is the answer 3.5?

Answer 6

y2= 7(-0.3)/2
= -2.1/2

Answer 7

y2= -1.05

Answer 8

What 😳^^

Answer 9

\[y \alpha x\]

Answer 10

y= kx
y/x =k

Answer 11

I have no clue what that means

Answer 12

Can you check my other question and see if my answers are correct

Answer 13

y directly varies x means
if y increase x increases and vice versa
is it clear

Answer 14

So the answer to this problem is y2 = -1.05

Answer 15

get it

Answer 16

I can't see that