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The x coordinates move a point to the left and to the right, where as they y coordinates move a point up and down.

Adding a positive number to an x coordinate will ALWAYS move the point to the right, while adding a negative number (subtracting an number) from the x coordinate will ALWAYS move the point to the left.

Here is an example:

Let P = (2,3) //note that all points are listed like this (x-coordinate, y-coordinate)

// that means 2 is the x value and 3 is the y value

If you add the x value + 4, you get 6. That shifts the point to the right one unit, without change the y value. The new point would be (6,3).

If you add the y value - 4, you get -2. That shifts the point to the left two units, without change the y value. The new point would be (-2,3).

Q: How does the location of the point change as the value of x changes?

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The slope changes as the value of x changes. For any point x, the slope is -8x.

The answer will depend on the value associated with the point.

The magnitude or value of the number.

On a 2 dimensional graph, the Y value is the same in each point on a horizontal line. The X value, however, changes. For example, the line Y=7 is an horizontal line; The Y value for every point on the line is 7, yet the X value changes. It is worth pointing out that the line will be straight.

That all depends on the value of 'x'. The answer will change as the value of 'x' changes.

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Money changes bacause of value.

The slope changes as the value of x changes. For any point x, the slope is -8x.

A distance is a measurement, and does not change based on which location is the starting point. (Unlike physics where the direction is considered)

If the x value changes u, then the y value changes by 7u.

The answer will depend on the value associated with the point.

When the value of a variable in an algebraic expression changes, the value of the expression can change.

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The magnitude or value of the number.

On a 2 dimensional graph, the Y value is the same in each point on a horizontal line. The X value, however, changes. For example, the line Y=7 is an horizontal line; The Y value for every point on the line is 7, yet the X value changes. It is worth pointing out that the line will be straight.

This temperature is called freezing point (the value is equivalent to the melting point).

It is expressing a change in the value of something as a percentage of its original value. So, if the original value (V) changes to the new value (W) then the change is W - V. Then, the relative change is (W - V)/V and the percentage change is 100*(W - V)/V = 100*(W/V - 1)

Inflation is the enemy of the economy. Over time, inflation decreases the real value of money, that is, your purchasing power. Inflation doesn't have any purpose, it just exist as part of our monetary system.