SOLUTION: The equation y=-90x + 1440 represents the time (in minutes) left after x games of a tournament. 1) Graph the equation 2) Interpret the x-intercept and slope. Not sure how to a

Algebra ->  Linear-equations -> SOLUTION: The equation y=-90x + 1440 represents the time (in minutes) left after x games of a tournament. 1) Graph the equation 2) Interpret the x-intercept and slope. Not sure how to a      Log On


   



Question 808844: The equation y=-90x + 1440 represents the time (in minutes) left after x games of a tournament.
1) Graph the equation
2) Interpret the x-intercept and slope.
Not sure how to answer questions one and two based on the equation given.
Diane

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
The minus sign in front of the +90x+ means
that the line slopes from the upper left to
the lower right. Here's a plot:
+y+=+-90x+%2B+1440+
+graph%28+400%2C+400%2C+-10%2C+30%2C+-100%2C+1600%2C+-90x+%2B+1440+%29+
--------------------
The negative slope means that as the number of games, +x+,
increases, the number of minutes remaining decreases.
--------------------
At the x-intercept, the number of minutes remaining is zero,
so all the games, +x+=+16+, have been played, and
the tournament is over.
Note that +0+=+-90%2A16+%2B+1440+, no minutes remaining.