Writing Consider the system of linear equations in x and y . a 1 x + b 1 y = c 1 a 2 x + b 2 y = c 2 a 3 x + b 3 y = c 3 Describe the graphs of these three equations in the xy -plane when the system has (a) exactly one solution, (b) infinitely many solutions, and (c) no solution.
Writing Consider the system of linear equations in x and y . a 1 x + b 1 y = c 1 a 2 x + b 2 y = c 2 a 3 x + b 3 y = c 3 Describe the graphs of these three equations in the xy -plane when the system has (a) exactly one solution, (b) infinitely many solutions, and (c) no solution.
Solution Summary: The author describes the graphs of the three equations in the xy -plane when the system has exactly one solution.
Writing Consider the system of linear equations in x and y.
a
1
x
+
b
1
y
=
c
1
a
2
x
+
b
2
y
=
c
2
a
3
x
+
b
3
y
=
c
3
Describe the graphs of these three equations in the xy-plane when the system has (a) exactly one solution, (b) infinitely many solutions, and (c) no solution.
The original idea for creating this applet comes from Steve Phelps' Graph the Line applet.
Directions:
1) Examine the equation shown on the right side of the screen.
2) Reposition the 2 big points so that the line is the graph of the displayed equation.
3) Click the "Check Answer" checkbox to check.
If you're correct, the app will inform you.
If you're not, you'll know this as well.
If you're not correct, keep trying until you position the gray line correctly.
4) After correctly graphing the line, click the "Generate New Line" button.
Problem 1 & 2 answers
1. One diagonal has 11 squares, then total square in total for two diagonal line is 11 + 11 - 1 = 21 .
2. Each part has 5 squares.(except middle)Multiply by 4: 5 × 4 = 20.Add the middle square: 20 + 1 = 21.
2. Now Figure out a different way you could determine how many squares there are in the figure,
again without counting them all one-by-one. Briefly describe this other method:
Chapter 1 Solutions
Bundle: Elementary Linear Algebra, Loose-leaf Version, 8th + WebAssign Printed Access Card for Larson's Elementary Linear Algebra, 8th Edition, Single-Term
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