Question

How do you graph `3x-4y=-18` by plotting points?

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=0to0-4y=-18rArry=9/2larrcolor(red)"y-intercept"`

`y=0to3x-0=-18rArrx=-6larrcolor(red)"x-intercept"`

`"plot the points "(0,9/2)" and "(-6,0)`
`"and draw a straight line through them"`
graph{(y-3/4x-9/2)((x-0)^2+(y-9/2)^2-0.04)((x+6)^2+(y-0)^2-0.04)=0 [-10, 10, -5, 5]}