Explanation for Question 8 From the Math (No Calc) Section on the 2018 April Sat
Question eight says in the X, Y plane, 2 the 0.26 lies on the graph of Y equals five of X or 3 Y equals K over X, where K is a constant, 4 which of the following points must also lie on the graph. 5 So what we can do is we can plug into six for Y equals 6 K over X and solve for K. So let's start by doing that. 7 So six is equal to K over 8 two. And when we do that, 9 we get K is equal to 12. 10 So now that we know that K is equal to 12, 11 we can plug in Y and X values from the answers and 12 see which, uh, are correct. 13 So, in what case does Y times X equal 12? 14 So does one times three equal 12? No. 15 Some A's role does one times four, 16 no, B is wrong. Three times three is nine. 17 So C is wrong and three times four is 12. 18 So D is the correct answer to.