50 7. The graph to the right represents the distance (y) Kelvin has walked after x seconds. 45 40 35 5 a. What is the slope-intercept equation for the graph? Distance 30 (Ieet) 25 Equation: 20 15 b. Predict how far Kelvin will have walked after 12 seconds. 10 5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Time (sec) Lesson 4.2 Writing Linear Equations for Graphs LdGems Core - Course 3 Copyright 2018 All Rights Reserved​