NameTEKS A.6.D

Date Class

Practice BPoint-Slope Form

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

2. slope = -2; (0, 5)1. slope = |; (-3,4)

-10.—8. ;-6 ;.-» ;-2...:Q|...i...j...;. ..I....LJ....J...;._;2

j.. 2 . . : 4 ; 6 ^ 8 : 1P

Write an equation in point-slope form for the line with the given slopethat contains the given point.

3. slope = 3; (-4,2) 4. slope = -1; (6, -1)

'

Write an equation in slope-intercept form for the line with the givenslope that contains the given point.

5. slope = -4; (1, -3) 6. slope =1; (-8, -5)

Write an equation in slope-intercept form for the line through the twopoints.

7. (2, 1 ); (0, -7) 8. (-6, -6); (2, -2)

9. The cost of internet access at a cafe is a function of time.The costs for 8, 25, and 40 minutes are shown. Write an equationin slope-intercept form that represents the function. Then find thecost of surfing the web at the cafe for one hour. Time (min)

Cost ($)

8

4.36

25

7.25

40

9.80

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37 Holt Algebra 1

Name Date Class.

| LESSON |tearPractice ASlopes of Parallel and Perpendicular Lines

Circle the equations whose lines are parallel.

1. y = 4; y = lx + 3; y = |x; y = 2x

2. y - 5 = 6(x + 2); y = -6x; 6 x + y = 4 ; y = 6

3. Find the slope of each segment.

slope of AB :

slope of-e : -4

slope of DC :

slope of BC :

Explain why ABCD is a parallelogram.

6(2, 3)

C(4; -t)

Circle the equations whose lines are perpendicular.

4. y = x - 4 ; y = 3 ; y = -x ;y= -3

5. y = 5x + 1 ; y = 3 ; y = ix; x = 5

6.

7. Find the slope of each segment.

slope of AB :

slope of BC :

slope of AC :

Explain why ABC is a right triangle.

= -3x + 9

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Holt Algebra 1