There are three main forms of linear equations.
Slope-intercept Point-slope Standard
y=mx+b y−y₁=m(x−x₁) Ax+By=C
Slope-intercept = m is slope and b is the y intercept.
Point-slope = m is slope and (x₁y₁) are point on the line.
Standard = a,b and c are the constants
Equation c is linear => y = 3x + 2