Question

How can you find the equation of a line, when only given one point, (2,5)...and a picture of the line graphed out? see attached file...

Answer 1

Do you know the gradient?

Answer 2

No, I'm only given the picture and one point...(2,5)...gradient would be the same as slope, right?

Answer 3

If the question is to find the equation of the line, I can only guess you have to read off another point e.g (-4,1) and yes, gradient means slope, I'm from England, we call it gradient :P

Answer 4

I'll try to figure it out, I guess...thanks.

Answer 5

Feel free to ask me if you have any more problems.

Answer 6

What about a problem, wanting you to find out the equation for a line, where you are only given a picture of the graphed line? see attached file..

Answer 7

the first one seems to have a y intercept at around 3.6 or 3.7 units
just use slope intercept form and find the equation.

Answer 8

What about the second picture?

Answer 9

the second picture, the line seems to be passing through (2,-3)

Answer 10

ok thanks...I'm probably thinking too hard , and making this too hard on myself..

Answer 11

and seems to have a y intercept of 0.6 or 0.7 units

Answer 12

yup, when not given enough information, it is sufficient to give an approximate answer.