Explanation for Question 1 From the Math (No Calc) Section on the 2017 May Sat
Let's take a look at question number one in section three of 2 the May, 2017 sat, 3 section three is a no calculator section. 4 So you won't be using a calculator for these questions. 5 Question number one says in the X Y plane, 6 what is the Y intercept of the line? What the equation Y equals four 7 X minus one. So this equation is in a format that we 8 really need to know for the sat. 9 And it's called the Y intercept form. This 10 goes like this, 11 Y equals MX plus B, and now we need to know to be able 12 to solve this question is what each variable stands for. 13 Let's start off with an X and the Y the X and the Y 14 values, or just any point that lies on the line. 15 Then we have the M, which is the slope and 16 the B, which is the Y intercept. 17 So this question is asking for the Y intercept. 18 So all we look at is where the B is. 19 It's right here. Now a common mistake would be to just say that the 20 Y and just have this one. However, 21 if we look at our equation, our equation has a positive B, 22 and we have a negative one for this line. 23 So our Y intercept is actually negative one or D.