### Home > CCA2 > Chapter 2 > Lesson 2.1.1 > Problem2-9

2-9.

Write the equation for each graph. 2-9 HW eTool (Desmos). Homework Help ✎.

 a. Hint (a):What is the y-intercept? Pick two points and determine the slope.Answer (a):$y = - \frac { 2 } { 3 } x - 4$ b. Hint (b):Refer to part (a). c. Hint (c):Which value (x or y) is equal to 2 on this line? (Look at the point.)More Help (c):All vertical lines have undefined slope and an equation of the form $x=k$. d. Hint (d):Refer to part (a).