#1: What is the y-intercept (b) of the line on the graph?

hiii

Step-by-step explanation:

y-intercpt equals (-1,4)

Note 1 :The y-intercept of this line is the value of y at the point where the line crosses the y axis.

Note 2: can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept.

2 hours and 40 minutes

Step-by-step explanation:

we need to find how much time it takes to complete the race if in two hours holden completed 3/4, the information is this:

hours    race

  2          3/4

   x            1

where x is the unknown hours that takes to complete 1 race.

Using rule of three:

we multiply  the cross quantities (2 by 1) and then divide by 3/4:

this is 2 hours plus 0.666 of hour.

0.666 of hour is equal to of hour, and since one hour has 60 minutes:

the total time is 2 hours and 40 minutes.