If a point aka ordered pair is a solution, it will appear on the table as the (x,y) will make the equation true.
Check all the “easy” x values that are integers (x = 0, x = 5, x = -1) — which y value in the answer choice does not match that of the table?
Look at where the graph crosses the x axis…then check those x values by seeing that the y value is 0 on the table. Students can also prove their answer by substituting the x values into the equation to see if the result is 0.
The function notation means to substitute in 9 for x. Students can use the table on the TI-83/4 instead of ‘plugging in’ to x. Put the equation into Y= and then hit second graph which takes you to the table and there you see it!!
Shout out to New York the Empire State aka the Regents State! The Regents is coming!
CC Algebra I is the most important Regents as s’s need at least 1 Math Regents to graduate and Alg I is so much more accessible than Geo or Alg II.
The best prep: Do Regents questions!!
There are certain questions that all and I mean ALL students should be able to answer correctly and get 2 points! Too often, students have not seen all the content and/or are not adept at the TI-83/4 calculator.
Make sure that you and your student(s), teacher(s) feel empowered to take the exam and learn Math in the process 🙂
Here is a link to the Bible of Algebra I (thanks to the jmap folks!)
If you prefer, you can call it an OED of Algebra I or the Primer of Algebra I.
The initial height means no time has passed and therefore t = 0.
The Regents offers this physics application of Math which is super easy to solve and learn!
When x = 0, in other words at 0 seconds, how high is the rocket?
You may not need a calculator to substitute in x = 0 🙂