Nursing Entrance Exam

Nursing Preparation Study Guide To write the equation of a line from a graph, begin by identifying the slope and y -intercept of the line. Next substitute these values into the slope-intercept equation. Example Write an equation of the line from the graph. Step 1: Find the slope = 8 − < = 1 − (−3) = 1 + 3 4 8 − < 2 − 0 2 = 2 = 2 Step 2: Find the y -intercept. Recall that the y-intercept is the location where the equation touches the y-axis. This always occurs at (0, ) . From the graph we can see that the y-intercept is at −3 . Therefore = −3 . Step 3: Make the substitutions into the equation. = + = 2 − 3

Achieve

Page 60

of 175

© 2018