brief review: linear equations in standard form

Standard Form

There are times when a linear equation needs to be expressed in Standard Form.

Standard Form

Let’s look at an example:•A deli sells sandwiches for $4 and sodas for $2.50. In one day it earned $750. What combination of sandwiches and sodas could it have sold?

Standard Form

This results in the following equation:

Sandwich price Soda price

Standard Form

This is a linear equation in Standard Form. To graph it, change it to Slope-Intercept Form.

Standard Form

Our Math Solver that converts an equation from Standard Form to Slope-Intercept Form shows this process.

Standard Form

Here is the Solver.

Standard Form

Input values for A, B, and C. Then press Solve.

Standard Form

Input the specific values. Then press Solve.

Standard Form

Here is the solution.

Standard Form

Here is a close-up of the Solution.

Standard Form

This is the equation in Slope-Intercept Form. You can graph this equation on a Graphing Calculator.

Standard Form

Here is the graph.

Use TRACE to find possible solutions.

Standard Form

Test any coordinates along the graph to verify the equation in Standard Form.