Another approach for Question 20 29:10, without using f(x) = mx+b, by determining corresponding points of f(x). f(x) = (x+3) g(x) Corresponding points for [x, g(x), f(x)] [ -27, 3, -72] [ -9, 0, 0] [ 21, 5, 120] Equation for f(x) using first 2 points y = (72/18)(x+9) = 4x + 36 Equation for f(x) using last 2 points y = (120/30)(x+9) = 4x + 36 Thus, slope = 4, Y intercept = 36
Would the answer for q22 be similar as in the negative number being the higher one if the question asks the exact same thing but the x ints are (-7,0) and (9,0) ?
Your midpoint (-7+9)/2 = 1 Vertex equation -b/2a = 1 b = -2a Your a+b equation (a+b) = -a If a is an integer greater than 1, it means that a can be 2, 3, 4, etc Your answer would be-2, -3, -4, etc It depends on the answer choices that are given to you, not necessarily the next negative number.
