Line mn passes through points m(4,3)and n(7,12).if the equation of the line is written

The value of B is -9 hope this helped

b=-9

Step-by-step explanation:

Given that line MN passes through two points (4,3) (7,12)

Let us assume that equation of the line be y =mx+b in slope intercept form

Since it passes through (4,3) substitute in the equation to get

... i

Similarly since the line passes through (7,12)

ii-i gives

9 =3m or m =3

Substitute in i

4x^2-4x-3=0

factor

(2x+1) (2x-3)=0

2x+1=0   2x-3=0

2x=-1       2x=3

x=-1/2      x=3/2

 x=-1/2, 3/2