Y=mx+b
-3=1(1)+b
-3=1+b
-3-1=1-1+b
-4=b
y=1x-4
Answer:
4
Step-by-step explanation:
The equation in y = mx+b form is y = -450x+2745
where,
x = number of hours that have passed by
y = distance to destination in miles
The y intercept is 2745 since this is the initial starting y value, aka the starting distance. Therefore b = 2745.
The slope is -450 or -450/1 since for each hour, the distance goes down by 450. You can think of it as
slope = (change in y)/(change in x)
slope = (change in distance)/(change in time)
slope = (-450 miles)/(1 hour)
slope = -450
Answer:
1) 9x-4
Step-by-step explanation:
7x+2x= 9x
-8+4= -4
9x-4
Answer:
Step-by-step explanation:
answer :C
