The number is
in the inequality
.
Further explanation:
The linear equation with slope m and intercept c is given as follows.

The formula for slope of line with points
and
can be expressed as,
Explanation:
The orange line intersects y-axis at
, therefore the y-intercept is -2.
The orange line intersect the points that are
and
.
The slope of the line can be obtained as follows.
The slope of the line is m = 2.
Therefore, the orange line is
.
The blue line intersects y-axis at
, therefore the y-intercept is -3.
The blue line intersect the points that are
and
.
The slope of the line can be obtained as follows.

The slope of the line is
.
The inequalities is
passes through the point
.

The number is – 12.
The number is
in the inequality
.
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Answer details:
Grade: High School
Subject: Mathematics
Chapter: Linear inequalities
Keywords: numbers, slope, slope intercept, inequality, equation, linear inequality, shaded region, y-intercept, graph, representation, origin.