Question

How do you graph `x+y=4`?

Answer 1

`"see explanation"`

Explanation:

`"one way is to find the intercepts, that is where the "`
`"graph crosses the x and y axes"`

`• " let x = 0, in the equation for y-intercept"`

`• " let y = o, in the equation for x-intercept"`

`x=0to0+y=4rArry=4larrcolor(red)" y-intercept"`

`y=0tox+0=4rArrx=4larrcolor(red)" x-intercept"`

`"plot "(0,4)" and "(4,0)" and draw a straight line"`
`"through them"`
graph{-x+4 [-10, 10, -5, 5]}