Question 1169403


The equation {{{4x - y + 16 = 0}}} describes the relationship between the dogs age {{{x}}} in dog-years and the dogs age in human-years {{{y}}}.


a)
Write the equation in {{{y = mx +b}}} form

{{{4x - y + 16 = 0}}} ...move {{{y}}} to the right

{{{4x + 16 = y}}} ...swap the sides

{{{y=4x + 16 }}}


b)

What is the age in human-years of a {{{7 }}}year old dog?

{{{x=7}}}

{{{y=4*7 + 16 }}}

{{{y=28 + 16 }}}

{{{y=44 }}}->the age in human-years 


c)

A friend tells you their dog is as old as their {{{60}}} year old grandparents. How old is the dog in dog-years?

{{{y=60}}}

{{{60=4x + 16 }}}

{{{60-16=4x }}}

{{{44=4x }}}

{{{44/4=x }}}

{{{x=11}}}->  their dog is {{{11}}}