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Equations of Line
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Pythagorean Theorem
100

( 9.0 X 106 ) 

( 1.0 X 104 )

9.0 x 1010

100

8.96 x 100   / 

  4 x 10-3

2.24 x 103

100

2x + y = 7

x - 2y = 6

( 8, 1 )

 x = 8  y = 1

100

y = x + 2

slope = 1

y-intercept = 2

100

In a right triangle ,

a = 3,  b = 4,determine c the hypotenuse

c = 5

200

( 2.0 X 104 ) 

( 3.0 x 100 )

6.0 x 104

200

6.0 x 106  /

3.0 x 10 1

2.0 x 105

200

x - y = -6

x + y = 8

( 1, -6 )

x = 1  y = -6

200

3x + y = 12

slope = -3

y-intercept = 12

200

In a right triangle, a = 5, b = 2, find c

c = 5.4

300

( 2.2 x 101 ) 

( 3.1 x 10-4 )

6.82 x 10-3

300

8.2 x 100    /

2.0 x 101

4.1 x 10-1

300

x + 2y = 4

13x + 2y = 28


( 2, 1 )

x=2,y = 1

300

y = 3x - 5

slope = 3

y-intercept = -5

300

In a right triangle, a = 3.6, c = 7.4, find b.

b = 6.5

400

( 1.2 x 10-4 )  

( 4.3 x 10-6 )

5.16 x 10-10

400

9.0 x 106  /

5.0 x 10-1

1.8 x 107

400

9x - 2y = 16

9x - 2y = -14

no solution

400

3y = -6x + 12

slope = -2

y-intercept = 4

400

In a right triangle, a = 3, b = 10, find c.

c = 10.4

500

( 2.2 x 102 ) 

( 6.13 x 10-3)

13.6 x 10-1 =

1.36 x 101 x 10-1 =


1.36 x 100  = 1.36

500

1.82 x 10-1 /

7.0 x 10-5

.26 x 104 =

2.6 x 103

500

4x + 2y = 14

5x + 2y = 16

( 2, 3 )

x = 2  y = 3

500

y = 5x2 + 6

This is not a linear equation.

500

In a right triangle, a = 2.7, c = 7, find b.

b = 6.5