Question

line MN passes through points M(4,3)and N(7,12).if the equation of the line is written in slope-intercept form, y=mx+b,what is the value of b?

Answer 1

The value of B is -9 hope this helped

Answer 2

b=-9

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

`3=4m+b` ... i

Similarly since the line passes through (7,12)

`12=7m+b ...ii`

ii-i gives

9 =3m or m =3

Substitute in i

`3=12+b\\b=-9`