Ref - OG (2nd edition ), Ques 102
Ques: In the coordinate plane, line k passes through the origin and has slope 2. If points (3,y) and (x,4) are on line k then x+y = ?
Though I got the question right but then I was trying to use different approach (rather, was testing slope definition) and kind of lost --
line is y = 2x
Now, (4-y)/(x-3) = slope = 2 ==> 4-y = 2x - 6 ==> 4 - y = y - 6 (as y = 2x) => 2y = 10 => y = 5, x = 5/2
This is not the answer but.
what am I doin wrong?
Ques: In the coordinate plane, line k passes through the origin and has slope 2. If points (3,y) and (x,4) are on line k then x+y = ?
Though I got the question right but then I was trying to use different approach (rather, was testing slope definition) and kind of lost --
line is y = 2x
Now, (4-y)/(x-3) = slope = 2 ==> 4-y = 2x - 6 ==> 4 - y = y - 6 (as y = 2x) => 2y = 10 => y = 5, x = 5/2
This is not the answer but.
what am I doin wrong?
