How do you find 2,13 and 5,22 in slope intercept form

Hello : let

 A(5,22)    B(2,13)

the slope is :   (YB - YA)/(XB -XA)

(13-22)/(2-5)  = -9/-3

an equation is : y=ax+b     a is a slope

y = 3x +b

the line through point A (5,22) :

 22 = 3(5)+b

b = 7

the equation is : y =3x+7

the answer is d

step-by-step explanation:

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s