Understanding the Concepts and Skills In Exercises, we give linear equations. For each equation, find the y-intercept and slope. determine whether the line slopes upward, slopes downward, or is...

Understanding the Concepts and Skills

In Exercises, we give linear equations. For each equation,

1. find the y-intercept and slope.


2. determine whether the line slopes upward, slopes downward, or is horizontal, without graphing the equation.


3. use two points to graph the equation.

y=−8−4x