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

1 Answer
Jim G.
Dec 28, 2017

"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]}

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