User:
• Matrices
• Algebra
• Geometry
• Graphs and functions
• Trigonometry
• Coordinate geometry
• Combinatorics
 Suma y resta Producto por escalar Producto Inversa
 Monomials Polynomials Special products Equations Quadratic equations Radical expressions Systems of equations Sequences and series Inner product Exponential equations Matrices Determinants Inverse of a matrix Logarithmic equations Systems of 3 variables equations
 2-D Shapes Areas Pythagorean Theorem Distances
 Graphs Definition of slope Positive or negative slope Determine slope of a line Equation of a line Equation of a line (from graph) Quadratic function Parallel, coincident and intersecting lines Asymptotes Limits Distances Continuity and discontinuities
 Sine Cosine Tangent Cosecant Secant Cotangent Trigonometric identities Law of cosines Law of sines
 Equations of a straight line Parallel, coincident and intersecting lines Distances Angles in space Inner product

Find the slope of perpendicular lines

Perpendicular lines have slopes that are opposite reciprocals, like $\frac{a}{b}$ and $-\frac{b}{a}$. The slopes also have a product of -1.

Line t has a slope of $-\frac{5}{6}$ . Line u is parallel to line t. What is the slope of line u?

Simplify your answer and write it as a proper fraction, improper fraction, or integer.

Line u is perpendicular to line t, so its slope is the opposite reciprocal. Find the opposite reciprocal.

 $-\frac{5}{6}$ Take the slope of line t $-\frac{6}{5}$ Find the reciprocal $\frac{6}{5}$ Find the opposite

 The slope of line u is $\frac{6}{5}$ .

Line f has a slope of $\frac{-3}{4}$. Line g is perpendicular to line f. What is the slope of line g?
Simplify your answer and write it as a proper fraction or as a whole or mixed number.

 Solution: