Question

Given y=7/4x-90.6
find y when x=-22

Answer 1

`y=-129.1`

Explanation:

You're pretty much given everything so just plug the x into the equation!

You first start off with the equation:

`y=(7)/(4)x-90.6`

the problem states that the
`x=-22`

so plug the x in the problem:

`y=(7)/(4)(-22)-90.6`

first, multiply the
`(7)/(4)` and
`-22` which becomes:

`y=(-38.5)-90.6`

then you just subtract:

`y=-129.1`

Answer 2

y = 7/4x - 90.6

y =7/4(-22) <— since x equals -22
y = 7/4(-22) - 90.6
y= 129. 1