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
4xy=3
Answer: parallel
7. 6x9y=4
2/3xy=11
Answer: perpendicular
8. y7=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

Algebra/Math  Bosnian, Sunday, October 17, 2010 at 8:05pm
Question 15:
slope is tangens of angle betwen xaxis and line.
Equation is:
tan(alpha)=(y2y1)/(x2x1)
Firs 5 question is O.K

Algebra/Math  Bosnian, Sunday, October 17, 2010 at 8:19pm
Sorry. Answer for question 5 is not correct.
2x+3y=4 , 3y=2x+4 (Divided with 3)
y=(2/3)x+4/3 Slope (2/3)
3x+2y=6 , 2y=3x+6 (Divided with 2)
y=(3/2)x+3 Slope(3/2)

Algebra/Math  Bosnian, Sunday, October 17, 2010 at 8:30pm
Question 6
(1/2)x+2y=1 , 2y=(1/2)x+1
(Divided with 2) y=(1/4)x+1/2
Slope(1/4)
4xy=3 , y=4x3 (Slope 4)
Perpendicular

Algebra/Math  Bosnian, Sunday, October 17, 2010 at 8:35pm
Question 7
6x9y=4 , 9y=6x*4 (Divided with 9)
y=(6/9)x4/9
y=(2/3)x4/9 Slope (2/3)
(2/3)xy=11 , y=(2/3)x11 Slope (2/3)
Parallel

Algebra/Math  Bosnian, Sunday, October 17, 2010 at 8:44pm
Best way to check that is that you drive this lines in grid.Is enough 2 points for any lines.
For question 5 draw lines
(2/3)x+4/3 and y=(3/2)x+3
For question 6 draw lines
(1/4)x+1/2 and y=4x3
For question 7 draw lines
(2/3)x4/9 and (2/3)x11

Algebra/Math  Bosnian, Sunday, October 17, 2010 at 8:50pm
Question 8
y7=0 y=7
For all values of x y=7
That is line parallel with xaxis
3x=5 (divided with 3)
x=5/3
For all values of y x=5/3
That is line p0arallel with yaxis

Algebra/Math  De, Monday, September 12, 2011 at 11:22pm
3x(5(108)
Answer This Question
Related Questions
 Math/Algebra do u know how to do slope intercept?  The following problems are ...
 Algebra  Can someone check my answers? 1. Write the equation of the line that ...
 Algebra  1. What is the equation for the line that passes through the point (5...
 Algebra 1 help  Can someone tell me if my answers are right and explain how you...
 Algebra  Could someone correct my answers and help with the other problems? 1. ...
 Algebra  Checking a few answers to some algebra problems: 1.Find the slope of ...
 Algebra  Could someone correct my answers and help with the other problems? 1. ...
 Math  Find the equation of the line that passes through the pair of points. ...
 Algebra  I am trying to find out if my answer's are correct. Can someone please...
 Algebra 1 Please help whenever you get the chance  2. What is the slope of the...
More Related Questions