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Unformatted text preview: epts. x and y
intercepts We can also see that the x and y intercepts are both the point (0,0). The x
intercept is where the graph of the func+on crosses the x
axis, or the point when y = 0. A func+on may have no x
intercepts, or may have many. The y
intercept is where the graph of the func+on crosses the y
axis, or the point when x = 0. A func+on may have zero or one y
intercepts. Now, we have all the informa+on we need to graph this linear func+on. We graph on a rectangular coordinate system called the Cartesian coordinate system. It looks like this: Graph of y = x To graph a linear equa+on, you must: Graph of y = x To graph a linear equa+on, you must: • Plot the x and y
intercepts (if they exist). Graph of y = x To graph a linear equa+on, you must: • Plot the x and y
intercepts (if they exist). • Plot at least two other points. Graph of y = x To graph a linear equa+on, you must: • Plot the x and y
intercepts (if they exist). • Plot at least two other points. Using the table, the graph of y = x looks like this: Graph of
3x + 4y =
6 Example. Graph
3x + 4y =
6. Graph of
3x + 4y =
6 Example. Graph
3x + 4y =
6. Solu+on: We must ﬁrst solve for y in the equa+on. Graph of
3x + 4y =
6 Example. Graph
3x + 4y =
6. Solu+on: We must ﬁrst solve for y in the equa+on. 4y = 3x – 6 Graph of
3x + 4y =
6 Example. Graph
3x + 4y =
6. Solu+on: We must ﬁrst solve for y in the equa+on. 4y = 3x – 6 y = (3/4)x – 3/2 Graph of
3x + 4y =
6 Example. Graph
3x + 4y =
6. Solu+on: We must ﬁrst solve for y in the equa+on. 4y = 3x...
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This note was uploaded on 02/10/2014 for the course MATH 133 taught by Professor Johnson during the Spring '11 term at American InterContinental University.
 Spring '11
 johnson
 Algebra

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