Question 114715
The equation of a line can be written as y=mx+c where m=gradient(slope) and c is the y value where the line cuts the vertical y axis.
Your slope is 2 so we have y=2x+c.(i)
Now we need to find the value of c.
In ANY question you must use all the info given(although with some vindictive posers of questions you may get 'red herrings').
Here we are told that the line passes through (6,4) and so replacing x and y by 6 and 4 respectively in (i)we get:
4=2*6+c=12+c.
Hence c=-8.
Your equation then is y=2x-8ANS