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## PowerPoint Slideshow about ' Warm-up' - aubrey-phillips

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### Finding X and Y intercepts

5

x

-5

-5

5

Where the line crosses the y-axis.

y-intercept = 3

(0, 3)

What is an intercept?

(4, 0)

x-intercept = 4

Where the line crosses the x-axis.

X and Y Intercepts

- Plug in 0 for y – this is the x-intercept
- Plug in 0 for x – this is the y-intercept

5

x

-5

-5

5

Finding X and Y intercepts2x + 3y = 6

2x + 3(0) = 6

2x = 6

2

2

(0, 2)

x = 3

(3, 0)

2x + 3y = 6

2(0) + 3y = 6

3y = 6

3

3

y = 2

5

x

-5

-5

5

Finding X and Y intercepts4x + 8y = 16

4x + 8(0) = 16

4x = 16

4

4

(0, 2)

x = 4

(4, 0)

4x + 8y = 16

4(0) + 8y = 16

8y = 16

8

8

y = 2

5

x

-5

-5

5

Finding X and Y interceptsx - 2y = 4

x - 2(0) = 4

x = 4

x = 4

(4, 0)

x - 2y = 4

(0) - 2y = 4

(0, -2)

-2y = 4

-2

-2

y = -2

5

x

-5

-5

5

Cover up methodHint: Cover up the 4y first.

Hint: Cover up the 2x this time.

Solve for x andy.

2x + 4y = 8

2x + 4y = 8

2x = 8

4y = 8

x = 4

y = 2

5

x

-5

-5

5

Use the Cover Up Method- 6x – 4y = 2

-6x = 2

x = -1/3

- 6x – 4y = 2
- -4y = 2
- y= -1/2
- (-1/3, -1/2)

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