How do you graph 2x+y=-22x+y=−2 using intercepts?
2 Answers
Find two vaules for
Explanation:
The easiest method is by finding two coordinates.
Find two vaules for
To find a co-ordinate, we must pick any
Let's pick
Then substitute into the equation:
So the first coordinate is
Then repeat picking a different
Assume
Second coordinate:
Then simply sketch a line between
graph{2x+y=-2 [-17.81, 17.81, -8.9, 8.91]}
Explanation:
color(blue)"finding the intercepts"finding the intercepts
• " let x = 0, in the equation for y-intercept"∙ let x = 0, in the equation for y-intercept
• " let y = 0, in the equation for x-intercept"∙ let y = 0, in the equation for x-intercept
x=0to0+y=-2toy=-2larrcolor(red)" y-intercept"x=0→0+y=−2→y=−2← y-intercept
y=0to2x+0=-2tox=-1larrcolor(red)" x-intercept"y=0→2x+0=−2→x=−1← x-intercept
"plot these 2 points and draw a straight line through them"plot these 2 points and draw a straight line through them
graph{-2x-2 [-10, 10, -5, 5]}