section 1.2 graphs of equations in two variables; intercepts; symmetry
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Section 1.2 Graphs of Equations In Two Variables; Intercepts; Symmetry. Determine if the following points are on the graph of the equation 3 x + y = 6. (a) (0, 4). (b) ( 2, 0). (c) ( 1, 3). . - PowerPoint PPT PresentationTRANSCRIPT
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Section 1.2Graphs of Equations In
Two Variables;Intercepts; Symmetry
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Determine if the following points are on the graph of the equation 3x +y = 6
(b) (2, 0)(a) (0, 4) (c) (1, 3)
0 43 4 6 3 62 0 3 3 61 33
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.
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Find the x-intercept(s) and the y-intercept(s) of the graph of then graph by plotting points.
2 4y x
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If a graph is symmetric with respect to the x-axis and the point (3,2) is on the graph, what other point is also on the graph?
(3,2)
(3,2)
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If a graph is symmetric with respect to the y-axis and the point (3,2) is on the graph, what other point is also on the graph?
( 3, 2) (3,2)
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If a graph is symmetric with respect to the origin and the point (3,2) is on the graph, what other point is also on the graph?
( 3, 2)
(3,2)
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2
2
9Test for symmetry.2
xyx
x-Axis: 2
2
92
xyx
Not equivalent so not symmetric with respect to the x-axis.
y-Axis:
2
2
9
2
xy
x
IS equivalent so symmetric with respect to the y-axis.
Origin:
2
2
9
2
xy
x
Not equivalent so not symmetric with respect to the origin.
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