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# Common Core Standard 8.F.A.3 Questions

Interpret the equation y = mx + b as defining a linear function, whose graph is a straight line; give examples of functions that are not linear. For example, the function A = s2 giving the area of a square as a function of its side length is not linear because its graph contains the points (1,1), (2,4) and (3,9), which are not on a straight line.

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Grade 8 Functions and Relations CCSS: 8.F.A.3
Which is NOT a linear function?
1. $f(x) = 4+x$
2. $f(x) = -x-4$
3. $f(x) = 4x^2$
4. $f(x) = 1/4x$
Grade 8 Functions and Relations CCSS: 8.F.A.3
Grade 8 Linear Equations CCSS: 8.F.A.3
Grade 8 Linear Equations CCSS: 8.F.A.3
Grade 8 Functions and Relations CCSS: 8.F.A.3
Is this graph linear?
1. Yes
2. No
3. Not enough information
4. Sometimes
Grade 8 Functions and Relations CCSS: 8.F.A.3
Is this graph linear?
1. Yes
2. No
3. Not enough information
4. Sometimes
Grade 8 Functions and Relations CCSS: 8.F.A.3
Is this graph linear?
1. Yes
2. No
3. Not enough information
4. Sometimes
Grade 8 Functions and Relations CCSS: 8.F.A.3
Is this graph linear?
1. Yes
2. No
3. Not enough information
4. Sometimes
Grade 8 Functions and Relations CCSS: 8.F.A.3
Is this graph linear?
1. Yes
2. No
3. Not enough information
4. Sometimes
Grade 8 Functions and Relations CCSS: 8.F.A.3
Is this graph linear?
1. Yes
2. No
3. Not enough information
4. Sometimes
Grade 8 Functions and Relations CCSS: 8.F.A.3
The equation $y=-2x^2+2$ is
1. linear.
2. nonlinear.
3. not a function.
4. both b and c.
Grade 8 Functions and Relations CCSS: 8.F.A.3
The equation $y=-15x+13$ is
1. linear.
2. nonlinear.
3. not a function.
4. both b and c.
Grade 8 Functions and Relations CCSS: 8.F.A.3
The equation $x=-3$ is
1. linear.
2. nonlinear.
3. not a function.
4. both a and c.
Grade 8 Functions and Relations CCSS: 8.F.A.3
The equation $y=3x+4$ is
1. linear.
2. nonlinear.
3. not a function.
4. both b and c.
Grade 8 Functions and Relations CCSS: 8.F.A.3
The equation $1-3x^2-y=2x-3+2y$ is
1. linear.
2. nonlinear.
3. not a function.
4. both a and c.
Grade 8 Functions and Relations CCSS: 8.F.A.3
The equation $y=6$ is
1. linear.
2. nonlinear.
3. not a function.
4. both a and c.
Grade 8 Functions and Relations CCSS: 8.F.A.3
The equation $6x-y=x-12$ is
1. linear.
2. nonlinear.
3. not a function.
4. both b and c.
Grade 8 Functions and Relations CCSS: 8.F.A.3
The equation $x+5+7y=12+7y$ is
1. linear.
2. nonlinear.
3. not a function.
4. both a and c.
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