[Video] Q17: The complete graph of the function f is shown in the xy-plane above. for what value of x is the value of f(x) at its minimum?

Explanation for Question 17 From the Math (Calc) Section on the Official Sat Practice Test 1

So this graph shows us the function F of X, 2 and we're asked at what value of X is Equifax at its minimum. 3 So step one is to find the minimum, right? If we look at this 4 graph, the minimum is going to be where F of X is that it's 5 a lowest, and this happens right here, 6 right at the lowest on the Y axis. 7 So this is our minimum point and we see that it's at negative 1, 2, 3, 8 it's negative three, comma, negative two. 9 And so we just need to make sure, right. They're asking us for that 10 X, what value of X is the value of, 11 for what value of X is the value of F of X at its 12 minimum? We're looking for the X coordinate, 13 which is negative three. So our answer for 17 has to be B.