Question

The ordered pairs (3,y) and (1/5,6) are the same direct variation, how do you find each missing value?

Answer 1

`y=90`

Explanation:

`"given "ypropx`

`"to convert to an equation multiply by k the constant of"`
`"variation"`

`rArry=kx`

`"to find k use the given coordinate point"`

`"that is "(1/5,6)tox=1/5,y=6`

`y=kxrArrk=y/x=6/(1/5)=6/1xx5/1=30`

`"equation is " color(red)(bar(ul(|color(white)(2/2)color(black)(y=30x)color(white)(2/2)|)))`

`"when x = 3"`

`y=30xx3=90`

`rArr(3,y)=(3,90)`