Wednesday
July 23, 2014

Homework Help: Algebra/Math

Posted by Karen on Sunday, October 17, 2010 at 3:02pm.

Can you check these for me.

Directions: Find the slope of the line that passes through each pair of points.

1. (3,-8) and (-5,2)
Answer: -10/8

2. (-10,-3) and (7,2)
Answer: -5,-17

3. (-7,-6) and (3,-6)
Answer: 9

4. (8,2) and (8,-1)
Answer: 0 undefined

Directions: State whether the graphs of the following equations are parallel, perpendicular, or neither.

5. 2x+3y=4
3x+2y=6
Answer: parallel

6. 1/2x+2y=1
4x-y=3
Answer: parallel

7. 6x-9y=4
2/3x-y=11
Answer: perpendicular

8. y-7=0
3x=5
Answer: neither

Math Problem: A pyramid of aluminum cans is built against a wall so that there are two cans in the top row, four cans in the second row, six cans in the third row , and so on. How many rows are there if the pyramid contains 1190 cans?
Answer: 595 rows

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