Question 1203270
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-2x+y = 4 is equivalent to y = 2x+4 after adding 2x to both sides.


Let's plug in x = 0
y = 2x+4
y = 2*0+4
y = 0+4
y = 4
We can see the point (0,4) is on the line.


Repeat for x = 1
y = 2x+4
y = 2*1+4
y = 2+4
y = 6
The line also goes through (1,6)


{{{
drawing(400,400,-5,5,-5+3,5+3,
graph(400,400,-5,5,-5+3,5+3,-100,2x+4),
circle(0,4,0.04),
circle(0,4,0.06),
circle(0,4,0.08),
circle(0,4,0.10),
circle(0,4,0.12),
circle(1,6,0.04),
circle(1,6,0.06),
circle(1,6,0.08),
circle(1,6,0.10),
circle(1,6,0.12),
locate(0+0.1,4+0.3,"(0,4)"),
locate(1+0.1,6+0.3,"(1,6)")
)
}}}
Graph of -2x+y = 4, aka y = 2x+4, through the two points (0,4) and (1,6)


Optionally you can plot more points, but 2 points is the bare minimum needed to make a straight line.


GeoGebra and Desmos are tools you can use as graphing software.
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