All Advanced Geometry Resources
Example Questions
Example Question #1 : How To Graph A Two Step Inequality
Solve and graph the following inequality:
To solve the inequality, the first step is to add to both sides:
The second step is to divide both sides by :
To graph the inequality, you draw a straight number line. Fill in the numbers from to infinity. Infinity can be designated by a ray. Be sure to fill in the number , since the equation indicated greater than OR equal to.
The graph should look like:
Example Question #201 : Coordinate Geometry
Points and lie on a circle. Which of the following could be the equation of that circle?
If we plug the points and into each equation, we find that these points work only in the equation . This circle has a radius of and is centered at .
Example Question #1 : Graphing
Which of the following lines is perpendicular to the line ?
The key here is to look for the line whose slope is the negative reciprocal of the original slope.
In this case, is the negative reciprocal of .
Therefore, the equation of the line which is perpendicular to the original equation is:
Example Question #1 : How To Graph A Two Step Inequality
Which inequality does this graph represent?
;
;
;
;
The two lines represented are and . The shaded region is below both lines but above
Example Question #1 : How To Graph A Two Step Inequality
What is the area of the shaded region for the following inequality:
;
This inequality will produce the following graph:
The shaded area is a triangle with base 7 and height 2.
To find the area, plug these values into the area formula for a triangle, .
In this case, we are evaluating , which equals 7.
Example Question #1 : How To Graph A Two Step Inequality
What is the area of the shaded region for this system of inequalities:
;
Once graphed, the inequality will look like this:
To find the area, it is easiest to consider it as 2 congruent triangles with base 6 and height 3.
The total area will then be
, or just .
Example Question #1 : How To Graph A Two Step Inequality
Find the -intercept for the following:
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Example Question #2 : How To Graph A Two Step Inequality
Let D be the region on the (x,y) coordinate plane that contains the solutions to the following inequalities:
, where is a positive constant
Which of the following expressions, in terms of , is equivalent to the area of D?
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