Explanation for Question 6 From the Math (No Calc) Section on the 2019 October Sat
Now for question number six were asked in the X, 2 Y plane, the Y coordinate of the Y intercept and the graph 3 of the function is C. So essentially let's draw out this function, 4 right? We have a function, maybe it looks like this. 5 And the Y intercept is going to be right here. 6 And that Y coordinate is C. 7 So there's a quick little picture that we can have to visualize this graph 8 they've just described for us. And now the question is, 9 which of the following must be equal to C. 10 And we noticed that they're giving us F of values. 11 And so what this really means is that they're not so much concerned with 12 the Y value here, but they're more concerned with the X value, 13 because if we think of this notation, we know that the X is what 14 goes inside the parentheses. So what they're really asking us here is what is 15 the X value of any Y intercept, 16 right? And we know that Y intercepts have to happen on the Y axis. 17 And the Y axis will always be going through X is equal to zero, 18 right? So for every single Y intercept on any graph, 19 your X will be zero. And if X is zero, 20 then I can plug zero in right here. And that means that I'm looking 21 at F of zero, which leads me to choose the best answer of a.