www.reference.com/article/equation-line-5aaca40b6aa91c64

To find a line's equation, identify two of the points through which the line passes, and then use the "x" and "y" coordinates to find the slope of the line, or the rate at which it climbs or falls. Use the slope to find the line's intersection with the y-axis.

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Find the slope of the line (m), and the place where the line crosses the y-axis, known as the y-intercept (b), to write the equation in slope-intercept form, y = mx + b. Use the equation to find the y value for any x on that line.

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An equation is a statement declaring that two values are equal. It has an equals sign and expressions on the left and right of the equals sign; the expression on the left and the right are equal.

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The way to calculate the equation of a line that includes the points (x,y) and (x1, y1) is to plug them into the equation y - y1 = m(x - x1) and solve for m, the slope of the line. The way to convert this to y = mx + b form is to plug one point and the slope into the same equation and solve for y.

www.reference.com/science/time-zone-lines-straight-35fc1fc7f4bdab32

Time zone lines are not always straight in order to accommodate the desires of nations within the boundaries of the zone. The irregularity is mainly due to political factors and has nothing to do with geography or any other natural cause.

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The vector equation of a line is r = a + tb. In this equation, "a" represents the vector position of some point that lies on the line, "b" represents a vector that gives the direction of the line, "r" represents the vector of any general point on the line and "t" represents how much of "b" is needed

www.reference.com/article/equation-tangent-line-161c23e66e5048ac

To find the equation of a line that is tangent to a curve, you must find a line with the same slope as that point of the curve. This can be done with a graphing calculator that can give the slope at a particular point or by hand using the derivative of a curve function.

www.reference.com/world-view/formula-equation-a36486fa6ab80ab7

A formula equation is a visual representation of a reaction using chemical formulas. A chemical formula is an expression that states the number and types of atoms that make up any given molecule using the symbols for the elements and sub-scripted numbers.

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The gradient of a line (m) is calculated by finding the quotient of vertical displacement (y2 minus y1) over horizontal displacement (x2 minus x1). This means that the slope is equal to the vertical change divided by the horizontal change.

www.reference.com/article/can-straight-line-distance-between-two-cities-5de3d00c7327d869

Use the online distance calculator tool on DistanceCalculator.GlobeFeed.com, FreeMapTools.com or DistanceFromTo.net to find the straight-line distance between two cities. Other names for straight-line distance include flying or air distance.