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Answer:
<h2>y = 1</h2>Step-by-step explanation:
The point-slope form of an equation of a line:
<em>m</em><em> - slope</em>
<em>(x₁, y₁)</em><em> - point on a line</em>
We have <em>m = 0, (3, 1) → x₁ = 3, y₁ = 1</em>.
Substitute:
<em>add 1 to both sides</em>
Other method.
If the slope is equal 0, then it's a horizontal line.
The equation of a horizontal line: <em>y = a</em>.
We have the point on a line (3, 1) → x = 3, y = 1.
Therefore the equation is <em>y = 1</em>.
Answer:
Step-by-step explanation:
Given
From the rows, the equation is:
--- (1)
--- (2)
--- (3)
Make A the subject in:
Substitute in
Make B the subject
Substitute in
Collect like terms
Divide by 9
Recall that:
Recall that:
Hence: