Question

help! given two point M&N on the coordinate plane, find the slope of MN, and state the slope of the line perpendicular to MN. M(9,6) N(1,4)

Answer 1

to find slope use formula

y2 - y1
-------
x2 - x1

Answer 2

you have (x1,y1) - > (9,6)
and (x2,y2) -> (1,4)

Answer 3

slope=6-4 >2 > 1
----- -- ----
9-1 > 8 > 4

Answer 4

then the slope is going to be the negative reciprocal of 1/4 making the slope of the perpendicular -4

Answer 5

then figure out the rest :)

Answer 6

ok

Answer 7

but you'll still need to find b (the y intercept)