Science-
is there such thing as an altocirrus cloud?
yes or no?

Yes

Explanation:

Cirrus clouds are the most common of the high clouds. They are composed of ice and are thin, wispy clouds blown in high winds into long streamers

Standard form of linear rquation : y=mx+b 

first find out the gradient 

gradient = rise/run 
gradient =(y2-y1)/(x2-x1) 
  the velocity of the car is 53 km/h.   the velocity of the car is 62 km/h" 
(x1,y1) = (3,53) 
(x2,y2) = (6,62) 

sub values back into the equation 
m = (62-53)/(6-3) 
m = 9/3 
m = 3 

now we use a point-slope form to find the the standard form 
y-y1 = m(x-x1) 
 
y-53 = 3(x-3) 
y-53 = 3x - 9 
y = 3x - 9 + 53 
y = 3x + 44 

y is the velocity of the car, x is the time.