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# Unit 1 Physics(Edexcel)? watch

1. A guide to practical work...its a graph question
In the First picture you can see the questions.I cant understand the second question

In the second picture is the Answers and you can see answer 2

how to find the equation of the line and

2. (Original post by reb0xx)
A guide to practical work...its a graph question
In the First picture you can see the questions.I cant understand the second question
In the second picture is the Answers and you can see answer 2
how to find the equation of the line and

On the Y-axis you have , on the X-axis - . So you can put and to obtain the equation of the line:

.

You also expect that .

From this you can see that the gradient is

To find the equation of the line, you would have to

(2) find . To find , put coordinates of a point on the line into the equation of the line.
3. (Original post by jaroc)
On the Y-axis you have , on the X-axis - . So you can put and to obtain the equation of the line:

.

You also expect that .

From this you can see that the gradient is

To find the equation of the line, you would have to

(2) find . To find , put coordinates of a point on the line into the equation of the line.
thank you!!!
but wouldn't be easier if we solve the equation?

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