Explanation
No, this is not correct.
Nice work getting the "\(c\)" (\(y\)-intercept) correct. However, from the graph, we can see the the line is downward sloping, not upward sloping. So the gradient should be a negative number. You probably just forgot a negative sign somewhere in your calculation.

Question 5 Hint Menu

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Question analysis
Here, we are asked to work out the equation of a straight line based on its graph. Don't forget that to create an equation for a straight line, we need a gradient and a \(y\)-intercept.
The gradient can be calculated by using one of the three formulas; have a look at what information is given on the graph, and compare that with what each formula needs.
The \(y\)-intercept can be worked out by using any coordinate, though take a good look at the graph because one of them may be more useful than the other!