how to find the equation of a line with two points of (2,10) and (1,5)

Question

I was going over a math sheet this summer and I totally forgot how to find the equation of a line! Please help anyone?

Answer 1

sound like yu wanna make a strate line tween 2 points: (1,5) & (2,10)

deltax=1, deltay=5, slope=deltay/deltax=5

line formula: y=5x+konst

projekt line from x=1 tu x=0...deltax=-1

deltay=slope*deltax=5*(-1)=-5

so y=5-5=0

line formula: y=5x+0,   same as y=5x