  • 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

 Write variable expressions for arithmetic sequences Write an expression to describe the sequence -3, -6, -9, -12,... Use n to represent the position of a term in the sequence, where n=1 for the first term. The sequence -3, -6, -9, -12,... looks like 1, 2, 3, 4,... except each term is multiplied by -3. So, the formula is -3n, where n represents the position of a term in the sequence. Check the first four terms: To find the 1st term, plug in n=1. -3n=-3(1)=-3 To find the 2nd term, plug in n=2. -3n=-3(2)=-6 To find the 3rd term, plug in n=3. -3n=-3(3)=-9 To find the 4th term, plug in n=4. -3n=-3(4)=-12 The sequence -3, -6, -9, -12,... is described by the expression -3n Write an expression to describe the sequence -7, -6, -5, -4,... Use n to represent the position of a term in the sequence, where n=1 for the first term. The sequence -7, -6, -5, -4,... looks like 1, 2, 3, 4,... except each term is 8 smaller. So, the formula is n-8, where n represents the position of a term in the sequence. Check the first four terms: To find the 1st term, plug in n=1. n-8=1-8=-7 To find the 2nd term, plug in n=2. n-8=2-8=-6 To find the 3rd term, plug in n=3. n-8=3-8=-5 To find the 4th term, plug in n=4. n-8=4-8=-4 The sequence -7, -6, -5, -4,... is described by the expression n-8.