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Which of the following equations is an example of direct variation?
1. 3y = 6x + 1
2. 2y = 12x
3. 2y + x = 7
4. All of the above represent direct variation
Which equation below has a larger rate of change than this graph?
1. $y=-1/3x$
2. $y=1/2x$
3. $y=-1/5x-3$
4. $y=9/2x$
A domain is
1. a mathematical sentence starting that two quantities are equal.
2. an expression that has a root.
3. the set of x-coordinates in a relation.
For a function, written in standard form, to be linear it must meet certain criteria. Pick THREE such criteria, listed below, that are valid.
1. x and y CAN be multiplied
2. x and y CAN be in the denominator
3. x and y HAVE exponents of 1
4. x and y have an exponent other than one
5. x and y are NOT multiplied together
6. x and y do NOT appear as the denominator
Which relationship is a direct variation?
1. x=1,2,3,4 and y=-1,0,1,2
2. x=1,2,3,4 and y=0,-1,-2,-3
3. x=1,2,3,4 and y=3,5,7,9
4. x=1,2,3,4 and y=3,6,9,12
Which of the following relations is also a function?
1. {(2,4), (3,5), (2,7)}
2. {(3,5), (4,6), (3,7)}
3. {(-2,1), (-2,3), (6,5)}
4. {(10,0), (2,4), (-2,6)}
Which sets of ordered pairs represent functions?
1. {(4,6) (5,7) (6,8) (7,9)}
2. {(1,8) (2,8) (3,8) (4,8) (5,8)}
3. {(2,4) (2,7) (6,4) (12,10) (15,5)}
4. {(3,5) (3,9) (3,11) (3,15)}
Grade 8 Functions CCSS: 8.F.A.2, 8.F.B.4
Grade 8 Functions CCSS: 8.F.A.2, 8.F.B.4
Solve the following equation:
2(-3x+5)-12=9x-3(5x+4)
1. Infinitely Many solutions
2. x=1
3. x=0
4. No Solution
Is this graph linear?
1. Yes
2. No
3. Not enough information
4. Sometimes