Attachment Mathswatch!!

a) It is a line where for every one block right, you go four blocks up. (0, -1) is on the line, because that is the y intercept.

b) 1=4x-1

2=4x

x=1/2

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.