ALGEBRA 2
|ALGEBRA 2 |
|Keywords & Keystrokes |
|Using the TI-84 Graphing Calculator |
| |
ALGEBRA 2: SOL CALCULATOR STRATEGIES
KEYWORDS & KEYSTROKES
EQUIVALENT and FACTORING TEST FUNCTION
ROOTS, SOLUTIONS, X-INTERCEPTS, SOLUTION SETS Y =
1. Input equation into Y1 , graph, then look at the x-intercepts (points where graph crosses x-axis) or calculate value (2nd, calc, # 1)
2. Go to table and look for y-value of 0
3. f(x)- match the y-value with the multiple choice answer
SYSTEMS OF EQUATIONS & INEQUALITIES Y =
1. Put all equations in the Y= menu and find points of intersection of the graphs. These are your solutions or solution set.
2. Match an inequality with a number line (use the appropriate inequality sign from the TEST menu when you input the equation)
MATRICES MATRIX, EDIT
• input matrix into the Edit menu and do the indicated operation on the home screen
• type A-1B for matrix equations
TABLE OF VALUES STAT menu OR Y=
• graph it to determine whether it fits a quadratic, linear, or exponential .
• run LinReg or QuadReg from the STAT menu based on the shape to get the equation of a BEST FIT LINE
• Y= if the problem also contains equations, put the equations into Y1 individually, highlight the Plot1 button on the menu, and graph them to find the best match
1) EQUIVALENT & FACTORING ONE VARIABLE
• use the TEST function on the calculator OR
• You can also use y= and turn all factors into zeros then look at the x-intercepts of your graph
2) FACTORING WITH 2 VARIABLES
• If the problem contains two variables, substitute 2 in for the second variable wherever it is used in the problem/multiple choice answers, and graph the new equation
• If the problem contains two variables, substitute 2 in for the second variable and use the TEST function on the calculator
3) ALL NUMBERS (no variables) - convert to decimal and check to find the equivalent multiple choice answer
4) COMPLEX NUMBERS AND “i” -do the operation on your calculator
5) ROOTS, ZEROS, SOLUTIONS, or SOLUTION SET, X-INTERCEPTS
• put the equation into Y1, go to the table and input the values in the multiple choice answers, choose the option that gives a y-value of 0
• look at the graph to determine the number of zeros by counting the number of times the line crosses the x-axis
• if a multiple choice answer contains i, substitute the solution into the equation for x, and type this into the calculator in the home screen
6) f(X) If the problem asks about the value of f(x), put the equation into Y1 and look at the x-value in the table
7) If you are given a TABLE OF VALUES, put the values into L1 and L2 in the STAT menu on your calculator
• graph it to determine whether it fits a quadratic, linear, or exponential shape
• run LinReg or QuadReg from the STAT menu based on the shape to get the equation of a BEST FIT LINE
• if the problem also contains equations, put the equations into Y1 individually, highlight the Plot1 button on the menu, and graph them to find the best match
EQUIVALENT
ALL NUMBERS
COMPLEX NUMBERS AND “i”
FACTORING
ROOTS, ZEROS, SOLUTIONS, X-INTERCEPTS, SOLUTION SETS
TABLE OF VALUES
GRAPHS
MATRIX
SYSTEM OF EQUATIONS OR INEQUALITIES
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