Jamesmansueto990go Jamesmansueto990go Math Answered Activity 1: Identify the letter of the correct answer. 1. Which of the following illustrates a linear equation in two variables?A.x + 1 = 4 B. x+y=4 C. y = 4 D. x+y>42. Which of the following does NOT illustrates a linear equation in two variables? A. 2x + 3y = 8 B.2y = 3x +7 C. 3x² + 2y = 7