The equation of a line is , where is the gradient, and is the intercept.
First, find the gradient .
Then substitute this value, and one of the points, into the equation to find .
Can someone please explain to me how to work this out? It's one question out of my homework. I have a bunch of problems similar to this. If someone can explain how to do this I should be able to manage the rest myself.
"Find the equation of the line joining each of these pairs of given points."
(4,1) and (7,3)
Show all your working to the above if you're still stuck getting the books final answer.