Graphing Linear Equations

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# Graphing Linear Equations - PowerPoint PPT Presentation

Graphing Linear Equations. Do the points fall on the graph of the line. 4x + 2y = 18. a. 4( 1 ) + 2( 8 ) = 18. b. 4( 3 ) + 2( 3 ) = 18. a. (1,8). 4 + 16 = 18. 12 + 6 = 18. b. (3,3). 20 = 18. 18 = 18. No. Yes. 15x + 5y = 5. a. 15( -2 ) + 5( 7 ) = 5. b. 15( -1 ) + 5( 4 ) = 5.

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## PowerPoint Slideshow about 'Graphing Linear Equations' - lillith-walker

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### Graphing Linear Equations

Do the points fall on the graph of the line

4x + 2y = 18

a. 4(1) + 2(8) = 18

b. 4(3) + 2(3) = 18

a. (1,8)

4 + 16 = 18

12 + 6 = 18

b. (3,3)

20 = 18

18 = 18

No

Yes

15x + 5y = 5

a. 15(-2) + 5(7) = 5

b. 15(-1) + 5(4) = 5

-30 + 35 = 5

-15 + 20 = 5

a. (-2,7)

5 = 5

5 = 5

b. (-1,4)

Yes

Yes

Find three different ordered pairs that are solutions

y = 2x + 10

y = -x + 5

(1,12)

(0,10)

(-1,8)

(1,4)

(0,5)

(-1,6)

Rewrite the equation in function form

4x + 2y = 20

5x + y = -5

-4x

-4x

-5x

-5x

2y = -4x +20

y = -5x - 5

2

2

y = -2x +10