Niall lives in Newry and his friend lives in Dromore. Niall lives a 10 minute walk from Newry bus station. His friend lives a 20 minutes walk from Dromore bus stop. Niall wants to plan a journey to arrive at his friend's house before 4pm. Plan Niall's journey

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is

first one because it can't have a fraction in it

step-by-step explanation: