See what we can offer to your school
"SimpleStudy just makes sense...”
Get the best plan for your school
10 cards from this deck
90 degrees (right angle)
m1×m2=−1m_1 \times m_2 = -1m1×m2=−1
m1=−1m2m_1 = -\frac{1}{m_2}m1=−m21
Flip the fraction and change the sign
Write given line in standard form y=mx+cy = mx + cy=mx+c
Use m1=−1m2m_1 = -\frac{1}{m_2}m1=−m21 to find perpendicular gradient
Use gradient-point form y−y1=m1(x−x1)y - y_1 = m_1(x - x_1)y−y1=m1(x−x1)
Vertical or horizontal lines
m=tanθm = \tan \thetam=tanθ
Negative reciprocals of each other
Select your subjects, and get access to A+ resources today.