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 09-01-2006, 05:51 PM #1 Member   Join Date: Aug 2006 Location: Ontario Posts: 560 Math Help: Practise Test 1, Section 6 I need some help... How do you do this question: pg 411 blue book, practise test 1, section 6, Q 13? I can't type it up because it involves a graph, and it's a grid question. How the hell do you do it? Last edited by vadox6466; 09-01-2006 at 06:11 PM. Reply
 09-01-2006, 06:03 PM #2 Member   Join Date: Aug 2006 Location: Ontario Posts: 560 This one too, another grid one (blue book, pg 412, Q17): "In the xy-coordinate plane, the graph of x = y^2 - 4 intersects line L at (0, p) and (5, t). What is the greatest possible value of slope L?" Last edited by vadox6466; 09-01-2006 at 06:11 PM. Reply
 09-01-2006, 06:11 PM #3 Member   Join Date: Aug 2006 Location: Ontario Posts: 560 Ah nevermind I found the updated thread.. Reply
 09-01-2006, 06:20 PM #4 Senior Member   Join Date: May 2006 Posts: 1,828 If you mean question 13 then its simple. Since H(x) = g(2x) + 2 then H(1) = G(2) + 2 G(2) on the graph is = to 1 (remember in G(X) the 2 is the X point so go that far on the x axis and you get a y point. That is where the 1 is coming from) and then add it to 2. There is your answer (3) For question 2... it is also simple. Ok first of all this is very simple. You have the point (0,p). Now find out what P is by plugging in 0 for X into the equation. You get + or - 2. NOw plug 5 in and you get + or - 3. Now think about it. To get the biggest slope you want to have a slope thats rising fast and running slow. ANd it has to be positive. So use the point (0, -2) and (5,3) for your 2 points of the slope. You should get 5/5 for ur slope or 1. Reply

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