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Published byElwin Stokes Modified over 8 years ago

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Learning Target Graph a line and write a linear equation using point-slope form and write a linear equation given two points.

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In lesson 5-6 you saw that if you know the slope of a line and the y-intercept, you can graph the line. You can also graph a line if you know its slope and any point on the line.

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**Graph the line with the given slope that contains the given point.**

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**Graph the line with the given slope that contains the given point.**

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**Graph the line with the given slope that contains the given point.**

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**Graph the line with slope –1 that contains (2, –2).**

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Write an equation in point-slope form for the line with the given slope that contains the given point. A. B. C.

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Write an equation in point-slope form for the line with the given slope that contains the given point. a. b. slope = 0; (3, –4)

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**Write an equation in slope-intercept form for the line through the two points.**

(2, –3) and (4, 1)

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**Write an equation in slope-intercept form for the line through the two points.**

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**Write an equation in slope-intercept form for the line through the two points.**

(0, 1) and (–2, 9)

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**Write an equation in slope-intercept form for the line through the two points.**

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**The cost to stain a deck is a linear function of the deck’s area**

The cost to stain a deck is a linear function of the deck’s area. The cost to stain 100, 250, 400 square feet are shown in the table. Write an equation in slope-intercept form that represents the function. Then find the cost to stain a deck whose area is 75 square feet.

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HW pp /20-44,51 Find the cost to stain a deck whose area is 75 square feet.

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**Warm Up Find the slope of the line containing each pair of points.**

1. (0, 2) and (3, 4) (–2, 8) and (4, 2) 3. (3, 3) and (12, –15) Write the following equations in slope-intercept form. 4. y – 5 = 3(x + 2) 5. 3x + 4y + 20 = 0 –1 –2 y = 3x + 11

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**Find the 16th term of the arithmetic sequence.**

4, 8, 12, 16, …

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