2. What is the slope of the line that passes through the pair of points? (7,2) and (9,6)

a. -1
b. -2
c. 1
d. 2

I think it's d

3. What is the slope of the line that passes through the pair of points? (3,-4) and (6,-9)

a. 5/3
b. -5/3
c. 3/5
d. -3/5

i think it's a

I'm not 100% sure about either of these.

3 answers

(6-2)/(9-7) = 4/2 = 2 yes d

(-9+4)/(6-3) = -5/3 so I think b
m = slope

m = ( y2 - y1 ) / ( x2 - x1 )

2.

x1 = 7

y1 = 2

x2 = 9

y2 = 6

m = ( y2 - y1 ) / ( x2 - x1 ) = ( 6 - 2 ) / ( 9 - 7 ) = 4 / 2 = 2

Answer d

3.

x1 = 3

y1 = - 4

x2 = 6

y2 = - 9

m = ( y2 - y1 ) / ( x2 - x1 ) = [ - 9 - ( - 4 ) ] / ( 6 - 3 ) = ( - 9 + 4 ) / 3 = - 5 / 3

Answer b
1.a 2.c 3.b 4.d