Which is most likely the first step in solving a system of nonlinear equations by substitution?

A. Substituting a number for one of the variables

B. Substituting one equation into the other equation

C. Isolating a variable in one of the equations

D. Taking the square root of both sides of one of the equations

Question

Mathematics

Guest

3 November, 14:11

Which is most likely the first step in solving a system of nonlinear equations by substitution?

A. Substituting a number for one of the variables

B. Substituting one equation into the other equation

C. Isolating a variable in one of the equations

D. Taking the square root of both sides of one of the equations

+2

Answers (1)

Know the Answer?

Marc Garner · Answer 1

The correct answer is:

C) isolating a variable in one of the equations.

Explanation:

In order to solve a system of equations using substitution, we must have one of the variables isolated; this is the only way we have something to substitute. If one of the variables is not already isolated, that must be our first step.