If the value of “y” varies directly with “x” and y = -8 when x = 20, find “y” if x = -4.

y =

Step-by-step explanation:

Given y varies directly with x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = - 8 when x = 20

k = = = -

y = - x ← equation of variation

When x = - 4, then

y = - × - 4 =

77

step-by-step explanation:

step-by-step explanation:

because 1/3 is a fraction. we can tell because there is a divisor symbol between the 1 and the 3. if we were to add 2 fractions together, we would add the numerators, which is the number on top, but not the denominators, which is the number on the bottom

1/3+1/3=2/3

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