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Topic review (newest first)

bobbym
2013-01-13 23:49:17

Hi;

Welcome to the forum. If you mean the second  line, the one parallel to 3x-4y+1=0 then the points are (8 , 2) and (0, -4).

The equation of the parallel line is



the equation of the circle with center at (4 , -1) is



Solve them both simultaneously:



vgauti
2013-01-13 23:36:53

A line drawn through A(4,-1) parallel to the line 3x-4y+1=0. Find the coordinates of the two points on this line which are at a distance of 5 units from A.

bobbym
2013-01-11 13:17:34

Okay, but call out if you need help. Sorry for the typo.

cooljackiec
2013-01-11 13:15:26

never mind, i understand it

bobbym
2013-01-11 12:45:51

Hi;

Yes, the copy and paste still had the earlier one in there I am sorry. Check 3) now .

cooljackiec
2013-01-11 12:39:48

I think 3) is wrong, could you express it in slope intercept?

bobbym
2013-01-11 12:38:18

Hi;

Let's start with 2), which part are you unsure about?

cooljackiec
2013-01-11 12:37:09

I am still unsure about 2) and 3)

bobbym
2013-01-11 12:18:56

Hi;

1) The equation of the line is  -8x + 5y = -30 so can you get m and b from that?

2) The equation of the line is  2x - 7y = -3, can you get A - B from that?


3) The equation of the perpendicular bisector is -3x + 5y = 41, can you get m and b now?

cooljackiec
2013-01-11 12:07:34

Anyways, i have a new problem:

1)Let line

be the graph of
. Line
  is perpendicular to line
  and passes through the point (10,10). If line
is the graph of the equation y =mx + b, then find m+b.


2) Find B-A if the graph of Ax + By = 7 passes through (2,1) and is parallel to the graph of 2x - 7y = 3

3)The "perpendicular bisector" of the line segment
is the line that passes through the midpoint of
  and is perpendicular to
.

The equation of the perpendicular bisector of the line segment joining the points (1,2) and (-5,12) is y=mx+b. Find m + b.

bobbym
2013-01-10 15:47:40

Hi;

I think we need more conditions to get an upper bound on the amount your truck can carry.

cooljackiec
2013-01-10 15:33:00

up:cool:dizzy:DYou are correct

bobbym
2013-01-09 15:59:34

Hi;

I am probably not understanding the question but this is what I am getting.

There is no largest amount you can be assured of carrying. The smallest amount is that your truck can carry 3200 lbs while each of her trucks can carry 2400 lbs.

cooljackiec
2013-01-09 11:59:36

I have a large truck and my neighbor has four identical small trucks. My truck can carry at least 800 pounds more than each of her trucks, but no more than one-third what all four of her trucks combined can carry. Knowing only these facts, what is the largest number of pounds that I can be assured of being able to carry in my truck?

bob bundy
2013-01-08 18:55:14

hi cooljackiec

Use [ or ] when the end point is included.  Use ( or ) when the end point is not included.

eg.

2 <   x   < 3  ............................    (2,3)

2 ≤   x   < 3 ..............................    [2,3)

You cannot reach ∞ so that end point will never be included.

x > 5            ................................ (5,∞)

Bob

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