Explanation for Question 1 From the Math (No Calc) Section on the 2019 May Sat
Question one says in the equation above a is a constant, 2 for which of the following values of value will be equation, 3 have no solution. So for an equation to have no solution, 4 that means that no matter what value you plug in for a, 5 the equation, would it make sense? So let's go one by one with these 6 answer choices, plug them in and see if the equation would still make sense. 7 If a was that value starting with a zero. 8 Now, if this equation read as zero X is equal to five, 9 it wouldn't matter what value we plugged in for X. 10 It would always turn out as zero equals five. 11 And that doesn't make sense because zero does not equal five. 12 Therefore the answer is a, 13 because if I was zero, this equation would have no solutions.