### Points on the coordinate plane

A point on the coordinate plane has coordinates $$\left( {x,y} \right)$$, where $$x$$ represents the number of units on the horizontal axis, and $$y$$ represents the number of units on the vertical axis.  To plot a point $$\left( {x,y} \right)$$ on the coordinate plane, first travel $$x$$ units left or right (depending on whether $$x$$  is negative or positive) along the horizontal axis, then travel $$y$$ units up or down (depending on whether $$y$$ is positive or negative).  Where you arrive is where you plot the point.

EXAMPLE:  Where is the point $$\left( { - 3, - 9} \right)$$?

SOLUTION:  To find the point $$\left( { - 3, - 9} \right)$$, we first travel 3 units to the left along the horizontal axis, and then we travel 9 units down.  This places us at the point $$S$$.

EXAMPLE:  Where is the point $$\left( {2, - 7} \right)$$?

SOLUTION:  Travel right 2 units along the horizontal axis, then travel down 7 units, to the point $$M$$.

1448 x

State the quadrant or axis that each point lies in.

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1032 x

Plot each point.

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984 x

State the coordinates of each point.

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### Geometry

Circles
Congruent Triangles
Constructions
Parallel Lines and the Coordinate Plane
Properties of Triangles

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Beginning Algebra
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