SOLVING QUADRATIC INEQUALITIES
The slope (Meaning or Definition): The slope of a line is the number of units that a line rises or drops vertically for each unit of horizontal change heading in the (right direction). Note that the rise of a slope has a sign either negative(down) or positive (up) but the run is always to the right.
Forms of the Equation of a Line
The general form of the equation of a line is given by Ax+By+Cy=0
The slope intercept form of the equations of a line is given by y=mx+b
The point slope form of the equation of a line is given by yy_{1}=m(xx_{1})
The vertical form of the equation of a line is given by x= a
The horizontal form of the equation of a line is given by y = b
Strategy to Write the Equation of a Line Given The Slope and Yintercept

Write down the slope intercept formula for the equation of a line y=mx+b.
 Assign the values of the slope to m and the y intercept to b.
 Substitute the values into the slope intercept form of the equation of a line.
Strategy to Write the Equation of a Line Given The Slope and a Point

Write down the point slope form of the equation of a line yy1=m(xx1) .
 Assign the values of the slope to m and the coordinate values of the point to x1 and y1.
 Substitute the values into the slope intercept form of the equation of a line.