## anonymous one year ago help The value of y varies directly with the value of x, and y = –21 when x = 3. Which equations represent the relationship between y and x? Choose exactly two answers that are correct. A. B. C. D.

1. MrNood

'varies directly with' means y= constant times x or in equation form y=kx

2. anonymous

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3. MrNood

you need to re-arrange th eanswers , and find those which are equivalent to y- kx (where k is any constant number)

4. anonymous

i dont get it

5. MrNood

for instance look at B $\frac{ y }{ x }= -7$ re write that as y= ????

6. anonymous

y = -7x

7. MrNood

ok good so is that in th esma format as y = kx (where k is any number?) IF so it is one of the answers

8. anonymous

oh

9. anonymous

A and B the answers right?

10. anonymous

@MrNood are you there

11. MrNood

lost connection you need to find all the answers which are equivalent to y = kx if oyu are happy with A & B the n go with it