Chapter 15 Equations and Graphs

Solving simultaneous equations graphically is the process that allows us to solve two or more algebraic equations that share variables by sketching their graphs. The point (or points) of intersection give(s) the solution(s) to the simultaneous equations. In this section, we learn about solving simultaneous equations graphically, simultaneous equations.

An inequality compares two values, showing if one is less than, greater than, or simply not equal to another value. In this section, we learn about inequalities graph vertical, inequalities graph horizontal, inequalities graph mixed, inequalities graph two variable.

A quadratic function is a polynomial function with one or more variables in which the highest exponent of the variable is two. The graph of the quadratic function is called parabola. In this section, we learn about Solve Quadratic Equation by Factorising, Completing the Square, plot quadratic equations.

The quadratic equation ax^2+bx+c=0 is said to have no real roots if its graph does not cross the x-axis . If its graph just touches the x-axis, the equation has one repeated root. In this section, we learn about Introduction to Sketching Quadratic Equations, Sketch the Quadratic Equation and Find the Coordinates of Turning Point, solve quadratic equations.

A cubic function is one whose highest power of x is x^3. It is written in the form y=ax^3+bx^2+cx+d. In this section, we learn about Cubic graph, cubic functions.