Answer:
slope = - 
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = 2x + 5 is in this form with slope m = 2
Given a line with slope m then the slope of a line perpendicular to it is
= -
= - 
Answer:
Step-by-step explanation:
Answer:
3rd one and the 4th one
Step-by-step explanation:
Hopt it helps.....