Metal mercury at room temperature is a liquid. Its melting point is -39°C. The freezing point of alcohol is -114°C. How much war
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The graph illustrates a linear function, because the graph is a straight line
The equation of the graph is <em>(d) y = x +3</em>
The points on the line are:
First, we calculate the slope (m)
Substitute values for x1, x2, y1 and y2
Simplify
Divide
The equation of the line is then calculated using the following formula:
Substitute values for m, x1 and y1
Simplify
Open bracket
Hence, the equation of the graph is <em>(d) y = x +3</em>
Read more about linear graphs at: