# What is the slope of the line perpendicular to # y=9/4-7 #?

##### 1 Answer

May 31, 2018

#### Explanation:

#y=9/4-7=-19/4#

#y=-19/4#

#"is the equation of a horizontal line parallel to the x-axis"#

#"passing through all points in the plane with a "#

#"y-coordinate equal to "-19/4#

#"because it is a horizontal line it's slope "=0#

#"and so a line perpendicular to it is vertical and "#

#"parallel to the y-axis with slope undefined"#