How do you find the intercepts for -x+y=3x+y=3?

1 Answer
Nov 4, 2016

x-intercept: (-3)(3)
y-intercept: 33

Explanation:

The x-intercept is the value of xx when y=0y=0

Replacing yy with 00 in -x+y=3x+y=3 gives
color(white)("XXX")-x+0=3XXXx+0=3

color(white)("XXX")-x=3XXXx=3

color(white)("XXX")x=-3XXXx=3

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The y-intercept is the value of yy when x=0x=0

Replacing xx with 00 in -x+y=3x+y=3 gives
color(white)("XXX")-0+y=3XXX0+y=3

color(white)("XXX")y=3XXXy=3