PSAT 2010 Wednesday Math Discussion

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21

<p>LoL, I think I actually got 7/5 for that one, probably a miscalculation…oops. Now I’ve missed like 5. Wowwww.</p>

22

<p>I really wanted an 80 :(</p>

23

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<p>True, but the 89 saves a LOT of time on certain questions (like the 5y=x(root(5)) question).</p>

24

<p>What was the 3/5 question?</p>

25

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<p>That’s what I did; I’m hoping I’m right (I don’t remember my actual answer).</p>

26

<p>Reflecting it over the line y=x would result in the points forming a line parallel to the one formed by the points given, so if you found the slope of the points given, you would still get the right answer. lol i find that pretty funny</p>

27

<p>That’s right because the inverse of the original is reflected over y=x, and to find the inverse, you switch x and y.</p>

28

<p>no, it was 1/5 you got (5y)/(25y) which equals 1/5</p>

29

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<p>No, that’s not right. The slope of a line reflected over the line y=x will be the multiplicative inverse of the original slope.</p>

30

<p>OH, nvm. I also got 1/5 for the root question. I thought you guys were talking about the grid-in.</p>

31

<p>I hope I don’t sound too cocky but the math was really easy. I go to a ghetto school and most of my friends held the same opinion. Anyone else think so?</p>

32

<p>^I second that opinion.</p>

33

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<p>Math is always really easy when you can only test an extremely limited and basic skill set.</p>

34

<p>purplepotato: </p>

<p>your somewhat right but this year’s was A LOT easier than last year’s math</p>

35

<p>“Instead of switching x and y for transforming across x=y, I used the opposite of both numbers. -7/5. <em>Quits math team</em>”</p>

<p>-7/5 isn’t right? Sh¡t!</p>

36

<p>no its 1/5</p>

37

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<p>I took this year’s and last year’s test and I didn’t notice a significant difference in difficulty. That may have just been me, though.</p>

38

<p>i have a question… i put on my grid in “08” instead of “8”, is that a problem?</p>

39

<p>@purplepotato: I got 1/5 somehow lol oh well</p>

40

<p>I got 50 for the radius of a circle.</p>

<p>21 for the area of the shaded region on a coordinate plane. </p>

<p>2 sets of parallel lines.</p>

<p>16 for some thing where you solved for x then plugged it into something.</p>

<p>-400 for another (or whatever A was)</p>

<p>640</p>

<p>6760 (or something) like that</p>

<p>9.1</p>

<p>and that’s it for now.</p>