Questions 1-4 : Determine whether each table represents a linear or nonlinear function.
Question 1 :
x 1 3 5 7 |
y -2 1 4 7 |
Question 2 :
x -1 1 3 5 |
y -2 6 22 46 |
Question 3 :
x 0 3 6 9 |
y 0 3 9 18 |
Question 4 :
x 0 4 8 12 |
y 4 2 0 -2 |
Questions 5-8 :Determine whether each graph represents a linear or nonlinear function.
Question 5 :
Question 6 :
Question 7 :
Question 8 :
Questions 9-13 : Determine whether each equation represents a linear or nonlinear function. Remember that all linear functions can be written in the slope-intercept form, that is y = mx + b.
Question 9 :
y = 5x + 2
Question 10 :
y = 3(x - 4)
Question 11 :
y = x/2 + 5
Question 12 :
y = 2/x - 3
Question 13 :
y = -5x
1. Answer :
x 1 3 5 7 |
y -2 1 4 7 |
In the above table, as x increases by 2, y increases by 3. The rate of change is constant. So, the above table represents a linear function.
2. Answer :
x -1 1 3 5 |
y -2 6 22 46 |
In the above table, as x increases by 2, y increases by a greater amount each time. The rate of change is NOT constant. So, the above table represents a nonlinear function.
3. Answer :
x 0 3 6 9 |
y 0 3 9 18 |
In the above table, as x increases by 3, y increases by a greater amount each time. The rate of change is NOT constant. So, the above table represents a nonlinear function.
4. Answer :
x 0 4 8 12 |
y 4 2 0 -2 |
In the above table, as x increases by 4, y decreases by 2 each time. The rate of change is constant. So, the above table represents a linear function.
5. Answer :
The above graph is a straight line. So it represents a linear function.
6. Answer :
The above graph is not a straight line. So it represents a nonlinear function.
7. Answer :
The above graph is a straight line. So it represents a linear function.
8. Answer :
The above graph is not a straight line. So it represents a nonlinear function.
9. Answer :
y = 5x + 2
The above function is in slope-intercept form.
So, it represents a linear function.
10. Answer :
y = 3(x - 4)
The above function can be written in slope-intercept form.
y = 3(x - 4)
y = 3x - 12
So, it represents a linear function.
11. Answer :
y = x/2 + 5
The above function can be written in slope-intercept form.
y = x/2 + 5
y = (1/2)x + 5
y = 0.5x + 5
So, it represents a linear function.
12. Answer :
y = 2/x - 3
The above function cannot be written in slope-intercept form.
So, it represents a nonlinear function.
13. Answer :
y = -5x
y = -5x + 0
The above function is in slope-intercept form.
So, it represents a linear function.
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