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Depdendent Variable

Number of equations to solve:

Equ. #1:

Equ. #2:

Equ. #3:

Equ. #4:

Equ. #5:

Equ. #6:

Equ. #7:

Equ. #8:

Equ. #9:

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Enter inequality to solve, e.g. 2x+3>4

Enter inequality to graph, e.g. y<3x^2-1

Dependent Variable

Number of inequalities to solve:

Ineq. #1:

Ineq. #2:

Ineq. #3:

Ineq. #4:

Ineq. #5:

Ineq. #6:

Ineq. #7:

Ineq. #8:

Ineq. #9:

Solve for:

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Linear Equations

To find the equation of a line, we must know a point on the line and the slope of the line.
For example, lets find the equation of the following line:

We must first find the slope:

Now we use one of the given points, say (3,1).

Using the point-slope equation we get

However, the book wants the equation written in General Form or Slope-Intercept form:
To put the equation in Slope-Intercept form (y = mx+b), solve the equation for y:


	Distribute
	Add 1 to both sides
	Simplify

To put the equation into General Form (Ax+By = C ) , we must get rid of the fractions:


4y−4=3(x−3)	Multiply both sides by 4
4y−4=3x−9	Distribute
3x−4y=5	Get in the form Ax+By = C