Explanation for Question 3 From the Math (No Calc) Section on the 2017 October Sat
Question three asks, which of the following statements is true about the graph of 2 the equation. Two Y minus three X is equal to negative four in the 3 X, Y plane. So to find the answer to this, 4 we're going to need to use the Y equals MX plus B formula, 5 which tells us that if we can get this equation up here into that 6 form, Y equals MX plus B, and we'll tell us the slope and 7 B will tell us the Y intercept, 8 and then we can figure out if the slope and y-intercept are negative for 9 positive. So I'm going to start by doing that, 10 just changing this equation into that form. 11 So I'll add three X to both sides to get to Y is equal 12 to three X minus four, and then divide both sides of the equation by 13 two to get Y is equal to three over two X 14 plus negative two. 15 Now we know that the M value is positive, 16 which means that the slope is positive so we can eliminate a and B 17 and that the Y intercept or the B value is negative. 18 So we know that the Y intercept is negative. 19 The slope is positive, and that the answer is.