a.
To calculate: changed form of an equation in the given system of equations to solve it using elimination
a.
Explanation of Solution
Given information: Equations are
Calculation:
According to multiplication property of equality, if we multiply the equation by a non-zero number, we get an equivalent equation.
Consider the equation
Multiply both sides by
Consider the equation
Multiply both sides by
b.
To calculate: value of
b.
Answer to Problem 4P
Explanation of Solution
Calculation:
From
Add both the equations.
Put
c.
To verify:
c.
Explanation of Solution
Proof:
Put
So,
Now, put
So,
Chapter 6 Solutions
High School Math 2015 Common Core Algebra 1 Student Edition Grade 8/9
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