Question

Hello! Could you please help with these? It was due quite a long time ago. I have a D in this class and need to get my grades up.

Answer 1

16.
`y=7x`

17.
`y=0.5x`

18.
`y=3x`

19.
`y=2x`

Explanation:

Equation is
`y=kx` where k is a constant of proportionality.

16.

`(y)/(x)=(10.5)/(1.5)=(14)/(2)=(24.5)/(3.5)=(35)/(5)=7`

So, equation is
`y=7x`

17.

`(y)/(x)=(1)/(2)=(2)/(4)=(2.5)/(5)=(3.5)/(7)=(1)/(2)=0.5`

Equation is
`y=0.5x`

18.

`(y)/(x)=(6)/(2)=(9)/(3)=(15)/(5)=(18)/(6)=3`

Equation is
`y=3x`

19.

`(y)/(x)=(4)/(2)=(8)/(4)=(14)/(7)=(18)/(9)=2`

Equation is
`y=2x`