### Home > AC > Chapter 5 > Lesson 5.1.3 > Problem 5-30

5-30.

Use the *y*-intercept and the growth rate to write the equation of the line at right.

Remember that the *x*-intercept is the point on the graph where *y* = 0 and that the *y*-intercept is the point where *x* = 0.

Remember that parallel lines have the exact same growth rate.

Plug in the point given (0,0) into the basic equation *y = mx + b* and simplify to find the equation of the line.

*m* = the growth rate *b* = the *y*-intercept

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