algebra
posted by mike .
How can you tell if two lines are perpendicular

let a = the slope of line A
let b = the slope of line B
if line B is perpendicular to line A, then a = 1/b.
Respond to this Question
Similar Questions

maths geometry
Find and write down a proof that the product of the gradients of two perpendicular lines is 1 Use trigonometry. Let the slope of a line from A to B be m1. Let the slope of a perpendicular line from A to C be m2. The tangent (or slope) … 
algebra need by 10p cst
How can you determine if two lines are perpendicular? 
math needed by 12midnight
How can you determine if two lines are perpendicular? 
MATH
How can you determine if two lines are perpendicular? 
MATH
Post your 50 or more word response to the following in the assignment link: How can you determine if two lines are perpendicular? 
geometry
Martin drew a pair of perpendicular lines and a pair of parallel lines. Which of these statements best compares the pairs of perpendicular and parallel lines? 
intermediate algebra
two perpendicular lines intersect at (2,3) one of the lines has an xintercept of 2. what are the equations of both lines? 
Algebra
Correct me if I'm wrong please 1. Tell whether the lines for each pair of equations are parallel, perpendicular, or neither. y = –2x + 4 –5x + 10y = 5 (1 point) A.parallel B.perpendicular * C.neither 2. Tell whether the lines for … 
Math
1. Write the following reversible as a biconditional: If two perpendicular lines intersect, they form four 90* angles. A) Two intersecting lines are perpendicular if and only if they form four 90* angles. B) Two intersecting, perpendicular … 
Geometry
write the following reversible statement as a biconditional: If two perpendicular lines intersect, they form four 90 degree angles. Two intersecting lines are perpendicular if and only if they form four angles. Two intersecting, …