How do I find an equation for a line? I need questions: 3&4

Pls help, I need it ASAP!

This is what I have so far for..
Question A(Number 3):
2-(-1) and 4-1 which equals 3/3 so m=1

Question B: i don’t know
Question A:(Number 4): (-3)-1 and 0-3 which equals 2/3 so m=0.6667
Help at least with how to find an equation for a line

beanburito

step-by-step explanation:

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

happy to

pls mark as brainliest

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540

step-by-step explanation:

the shape,the size and the distance