The value of x varies directly with the value of y and when x=3 y= -9 write an equation to represent the direct variation.

y = - 3x

Step-by-step explanation:

Given that x varies directly as y then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = - 9 when x = 3

k = = = - 3

y = - 3x ← equation of variation

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph