This paper is about the knowledge points of mathematics in the first volume of the second day of Beijing Normal University Edition: The seventh chapter is binary linear equations, which is specially compiled by KaoNet for everyone, hoping to help everyone!

1, binary linear equation

An integral equation with two unknowns whose terms are 1 is called a binary linear equation.

2, the solution of binary linear equation

A set of unknown values suitable for binary linear equation is called the solution of this binary linear equation.

3. Binary linear equation

An equation group consisting of two linear equations with two unknowns is called a binary linear equation group.

Solutions of four binary linear equations

The common * * * solution of each equation in a binary linear system of equations is called the solution of this binary linear system of equations.

5, the solution of binary linear equations

(1) substitution (elimination) method (2) addition and subtraction (elimination)

6, the relationship between linear function and binary linear equation (group):

The relationship between (1) linear function and binary linear equation;

The coordinate y=kx+b of any point on a straight line is the solution of its corresponding binary linear equation kx- y+b=0.

When the function images intersect, it means that the corresponding binary linear equations have solutions; When the function images (straight lines) are parallel, that is, there is no intersection point, it means that the corresponding binary linear equations have no solution.