Difference between revisions of "Math 22 Graph of Equation"
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==Intercepts of a Graph== | ==Intercepts of a Graph== | ||
Some solution points have zero as either the <math>x</math>-coordinate or the <math>y</math>-coordinate. These points are called intercepts because they are the points at which the graph intersects the <math>x</math>- or <math>y</math>-axis. | Some solution points have zero as either the <math>x</math>-coordinate or the <math>y</math>-coordinate. These points are called intercepts because they are the points at which the graph intersects the <math>x</math>- or <math>y</math>-axis. | ||
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| + | To find <math>x</math>-intercepts, let <math>y</math> be zero and solve the equation for <math>x</math>. | ||
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| + | To find <math>y</math>-intercepts, let <math>x</math> be zero and solve the equation for <math>y</math>. | ||
'''This page were made by [[Contributors|Tri Phan]]''' | '''This page were made by [[Contributors|Tri Phan]]''' | ||
Revision as of 06:51, 13 July 2020
The Graph of an Equation
The graph of an equation is the set of all points that are solutions of the equation.
In this section, we use point-plotting method. With this method, you construct a table of values that consists of several solution points of the equation
For example, sketch the graph of . We can construct the table below by plugging points for .
| x | 0 | 1 | 2 | 3 |
| y=2x+1 | 1 | 3 | 5 | 7 |
So, we can sketch the graph from those order pairs.
Intercepts of a Graph
Some solution points have zero as either the -coordinate or the -coordinate. These points are called intercepts because they are the points at which the graph intersects the - or -axis.
To find -intercepts, let be zero and solve the equation for . To find -intercepts, let be zero and solve the equation for .
This page were made by Tri Phan