Question

• What methods can be used to solve a system of equations

Answer 1

Three Methods: substitution, elimination, and graphing.

Explanation:

Graphing: To find the solution of a system of equations on a graph, you find the point of intersection of the two lines.

Elimination:

1. Multiply each equation by a certain number to get the LCM for one of the variables.
2. Add/subtract the two equations to get rid of that variable.
3. Substitute that variable into one equation and solve for the remaining variable.

Substitution:

1. Solve an equation for one of its variables. (either x or y)
2. Substitute this equation into the other equation and simplify/solve.
3. Resubstitute the number into the original equation (#1) to find the other variable.