The problem asks to graph the inequality $x + y < 1$.

AlgebraLinear InequalitiesGraphingCoordinate Geometry
2025/3/28

1. Problem Description

The problem asks to graph the inequality x+y<1x + y < 1.

2. Solution Steps

First, we rewrite the inequality in slope-intercept form, which is y=mx+by = mx + b, where mm is the slope and bb is the y-intercept.
x+y<1x + y < 1
Subtract xx from both sides:
y<x+1y < -x + 1
The corresponding equation is y=x+1y = -x + 1. This is a line with a slope of 1-1 and a y-intercept of 11.
Since the inequality is strictly less than, we draw a dashed line to indicate that the points on the line are not included in the solution.
To determine which side of the line to shade, we can test a point that is not on the line. A convenient point is (0,0)(0, 0).
Substitute x=0x = 0 and y=0y = 0 into the inequality x+y<1x + y < 1:
0+0<10 + 0 < 1
0<10 < 1
Since this is true, we shade the region containing the point (0,0)(0, 0). This is the region below the line.

3. Final Answer

The solution is the region below the dashed line y=x+1y = -x + 1. The line has a y-intercept of 1 and a slope of -
1.

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