Question

How do you graph the line `2x - y = -8`?

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

`x=0rArr-y=-8rArry=8larrcolor(red)"y-intercept"`

`y=0rArr2x=-8rArrx=-4larrcolor(red)"x-intercept"`

`"Plot the points "(0,8)" and "(-4,0)`

`"Draw a straight line through them for graph"`
graph{(y-2x-8)((x-0)^2+(y-8)^2-0.04)((x+4)^2+(y-0)^2-0.04)=0 [-20, 20, -10, 10]}