Question

Suppose y varies directly with x. Write an equation relating x and y.
  y = −30 when x = 6

Answer 1

y varies directly with x: y = kx

y = -30 when x = 6: -30 = 6k

Answer 2

5k

Answer 3

a.
y = −5x
c.
y = −36x
b.
y = 5x
d.
y = 36x

Answer 4

you have to divide both sides of the equation by 6 to find out what k equals. so -30/6 = ?

Answer 5

-5x
okay thx

Answer 6

no problemo