1. we use a TI-82 to find the equation:
1)Press STAT, 1. Enter the c values in L1 and s values in L2 .
It seems that we can draw a straight line through all 6 points. So, we will find a linear relation between s and c. we do so using a TI-82 STAT feature.
2) Press 2nd STAT PLOT,1, Enter, ZOOM, 9.
The correct answer is C. Remember that s=Y and c=X. Also, a=5 and b=20. So, we have:
Y = 5X + 20 OR
S = 5c + 20
3) Press STAT, right arrow, 5, Enter.
OBJECTIVE N

2. The correct answer is C. a = -1 and b = 2. So, we have:
we use a TI-82 to find the equation:
1)Press STAT, 1. Enter the X values in L1 and Y values in L2 .
2) Press 2nd STAT PLOT,1, Enter, ZOOM, 9.
It seems that we can draw a straight line through all 4 points. So, we will find a linear relation between Y and X. we do so using a TI-82 STAT feature.
3) Press STAT, right arrow, 5, Enter.
The correct answer is C. a = -1 and b = 2. So, we have:
Y = -X + 2
OBJECTIVE N

3. 2) Press 2nd STAT PLOT,1, Enter, ZOOM, 9.
It seems that we can draw a straight line through all 4 points. So, we will find a linear relation between the amount of profit and number of hot dogs sold. we do so using a TI-82 STAT feature.
we use a TI-82 to find the amount of profit David made:
1)Press STAT, 1. Enter the number of hot dogs in L1 and the total profit in L2 .
4) Press Y= , VARS, 5, right arrow twice, 7.
5) Press 2nd TblSet and set Indpnt to Ask. Then press 2nd TABLE and enter 100 for X. Notice the answer 45.
To check your equation, enter 50,60,70, and 80 for X. The values for Y1 should be the same as given in the table above.
3) Press STAT, right arrow, 5, Enter.
OBJECTIVE N

4. The correct answer is G. a = 2 and b = 2. So, we have:
we use a TI-82 to find the equation:
1)Press STAT, 1. Enter the X values in L1 and Y values in L2 .
2) Press 2nd STAT PLOT,1, Enter, ZOOM, 9.
It seems that we can draw a straight line through all 6 points. So, we will find a linear relation between Y and X. we do so using a TI-82 STAT feature.
3) Press STAT, right arrow, 5, Enter.
The correct answer is G. a = 2 and b = 2. So, we have:
Y = 2X + 2
OBJECTIVE N

5. 3) Press Y=. Enter all 5 equations in Y1-Y5.
4) Arrow to the = of the equations in Y2-Y5 and press ENTER to turn them off (you should have only one equation on; you can turn the equation back on by going over the = sign and pressing ENTER). Then press GRAPH.
3) Press Y=. Enter all 5 equations in Y1-Y5.
A is not the correct answer because the graph of the function does not go through all the points!
we use a TI-82 to find the function:
1)Press STAT, 1. Enter the X values in L1 and the Y values in L2 .
D is the correct answer because the graph of the function goes through all the points! Turn on the equations of B, C, and E one at the time to see that the graphs of the functions do not go through ALL the ordered pairs given above.
2) Press 2nd STAT PLOT,1, Enter, ZOOM, 9.