a + b = 80 ⇒ X ( min ) = 4

Lines: Slope Intercept Form

Lines: Point Slope Form

Lines: Two Point Form

Parabolas: Standard Form

Parabolas: Vertex Form

Parabolas: Standard Form + Tangent

Trigonometry: Period and Amplitude

Trigonometry: Phase

Trigonometry: Wave Interference

Trigonometry: Unit Circle

Conic Sections: Circle

Conic Sections: Parabola and Focus

Conic Sections: Ellipse with Foci

Conic Sections: Hyperbola

Polar: Rose

Polar: Logarithmic Spiral

Polar: Limacon

Polar: Conic Sections

Parametric: Introduction

Parametric: Cycloid

Transformations: Translating a Function

Transformations: Scaling a Function

Transformations: Inverse of a Function

Statistics: Linear Regression

Statistics: Anscombe's Quartet

Statistics: 4th Order Polynomial

Lists: Family of sin Curves

Lists: Curve Stitching

Lists: Plotting a List of Points

Calculus: Derivatives

Calculus: Secant Line

Calculus: Tangent Line

Calculus: Taylor Expansion of sin(x)

Calculus: Integrals

Calculus: Integral with adjustable bounds

Calculus: Fundamental Theorem of Calculus