3.2 Review Worksheet

3.2.1 Finding the Slope Given Two Points 1. Find the slope of the line that contains points ( − 9, − 5) and (6, − 5).

Each graph or table shows a linear relationship. Find the slope. 2. x y 1 18.5 2 22 3 25.5 4 29 3. –4 –2

y

4

(0, 2)

2

x

2

4

(4, –1)

–2

Find the slope of each line. Then tell what the slope represents. 4. Temperature Conversion 5.

Boiling Point of Water

y

206 208 210 212 214 (500, 212.9)

10

x

0

–40

–20

(5, –15)

(2500, 207.5)

–1000

1000 2000

–40

0

(–40, –40)

Altitude above sea level (ft)

Temperature (°F)

3.2.2 Slope-Intercept Form Write the equation of each line in slope-intercept form. 6. =− = y slope , -intercept 2

2 3

7. slope = 0, (6, − 8) is on the line

8. line through (5, 2) and ( − 2, 2)

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