You start with 100 points for attendance. Every daythat you are tardy, you lose 2.5 points.

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

y=2.5x+100 is a linear (straight line) graph so you only need two points to plot it. The best points are the intercepts. Mark these on the axes as follows: x-intercept (y=0) is when 2.5x=-100, x=-40 corresponding to point (-40,0). y-intercept (x=0) is when y=100, corresponding to (0,100). Choose your scale on the axes to allow these two points to fit, mark and label them and then draw the line passing through both. That’s your graph. Showing the intercepts like this on your graph demonstrates that you understand how to draw linear graphs.

Note that this graph DOES NOT represent losing points for tardiness. The proper graph would be y=-2.5x+100 where x is the number of days. The y-intercept is still 100 but the x-intercept is 40, not -40.

by Top Rated User (839k points)

Related questions

1 answer
asked Oct 2, 2015 in Algebra 1 Answers by Shelly | 2.5k views
1 answer
asked Sep 3, 2013 in Algebra 2 Answers by Margaret | 798 views
1 answer
asked Oct 6, 2012 in Algebra 1 Answers by anonymous | 303 views
0 answers
asked Aug 28, 2012 in Algebra 1 Answers by anonymous | 279 views
0 answers
asked Jun 24, 2012 in Algebra 2 Answers by John William Hensley Level 1 User (120 points) | 263 views
1 answer
1 answer
asked Oct 24, 2012 in Algebra 2 Answers by anonymous | 210 views
Welcome to, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
86,305 questions
92,362 answers
23,927 users