Question

Please help Q2: equation of straight lines through a fixed point (h,k)..

Answer 1

You need at least two points to define a line.
Do you mean passing through (h,k) and the origin?

Answer 2

um, I don't know since it's the only thing written in my homework, ,maybe its any line which pass through this point which is (h,k)

Answer 3

(y-k)=m*(x-h)
vary m, which is the slope of the line, you'll get a new line for each value of m

Answer 4

Nevermind, I see what it meant.
You need to generate a line with the point-slope form,

\[y - y_1 = m(x-x_1)\]
Now, you can set y_1 = k and x_1 = h. Change m in any way you like, and you'll generate all lines (in effect, rotated about (h,k) that pass through (h,k).

Answer 5

Thank you:))