Question

Find the equation for the line through points (7,5) and (9,4) use y=Mx+b

Answer 1

Let calculate the slope

`M=(y2-y1)/(x2-x1)=(4-5)/(9-7)`

So,

`M=-(1)/(2)`

Now for b

`b=y-Mx`

Using (7,5),

`b=5+(1)/(2)(7)\rightarrow b=(17)/(2)`

The equation of the line that passes through the points

`y=-(1)/(2)x+(17)/(2)`