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- 1. Multiple-choice1 minute1 pt-3a + 8 = 14a= -2a= -7.5a= 2a= 6
- 2. Multiple-choice45 seconds1 pt
The first step in solving using the substitution method is __________.
get x by itself
get y by itself
get either variable by itself in one equation
add the equations together
- 3. Multiple-choice3 minutes1 ptSolve the system of equations using substitution:
-4x + 4y = 8
y = -2x - 10(-4, -2)(12, -34)(4, -18)(-2, -6) - 4. Multiple-choice15 minutes1 pt
Solve this system by substitution.
(1, -4)
(1, 4)
(-4, -7)
(-7, -4)
- 5. Multiple-choice45 seconds1 ptThe first step in solving using the substitution method is __________.get x by itselfget y by itselfget either variable by itselfadd the equations together
- 6. Multiple-choice30 seconds1 pt
What is the first step in solving a system of equations by elimination/matrices?
Get both equations in standard form and line up the like terms.
Get both equations in slope-intercept form.
Get both equations equal to zero.
Put the x terms first.
- 7. Multiple-choice30 seconds1 pt
Which is the best method to use?
y = 6x − 11
−2x − 3y = −7
Graphing
Substitution because a variable is isolated.
Elimination because both equations are in standard form.
- 8. Multiple-choice5 minutes1 pt
Solve the system by elimination.
8x +10y = - 20
−8x − 6y = −4
Infinite number of solutions
(6, 5)
(−6, −5)
(5, −6)
No Solution
- 9. Multiple-choice30 seconds1 ptFind x and y using the elimination method
2x+3y=7
2x+7y=11x=-2, y=-1x=2, y=-1x=2, y=1x=-2, y=1 - 10. Multiple-choice5 minutes1 ptSolve by elimination:
7x-9y=29
7x+2y=-15(-4,-1)(-1.-4)(-1,4)(-1,6) - 11. Multiple-choice2 minutes1 ptA babysitter earns $8 an hour for babysitting 2 children and an additional $3 tip when both children are put to bed on time. If the babysitter gets the children to bed on time, what expression could be used to determine how much the babysitter earned?8x+3 where x is the number of hours3x+8 where x is the number of hoursx(8+2) + 3 where x is the number of children3x+(8+2) where x is the number of children
- 12. Multiple-choice5 minutes1 ptA high school basketball team won exactly 65 percent of the games it played during last season. Which of the following could be the total number of games the team played last season?22201814
- 13. Multiple-choice5 minutes1 ptx + 5 > 7x > -2x > 2x > 12x > -12
- 14. Multiple-choice2 minutes1 pt-24 + k ≤ 10k ≤ 1434 ≤ kk ≤ 3414 ≤ k
- 15. Multiple-choice5 minutes1 pt-4x + 14 ≤ 54x ≥ - 10x ≤ -10x ≥ 10x ≤ 10
- 16. Multiple-choice15 minutes12 ptsSue's lunch account has $25 and she spends $2.50 every day. Troy's lunch account has $50 and she spends $3.25 every day. Write an inequality that shows when Sue's account will be more than Troy's.25 - 2.5d > 50 - 3.25d25 - 2.5d < 50 - 3.25d25 + 2.5d > 50 + 3.25d25 + 2.5d < 50 + 3.25d
- 17. Multiple-choice3 minutes1 ptFactor:
x2 + 7x - 30(x + 10)(x - 7)(x - 10)(x + 3)(x + 10)(x + 3)(x + 10)(x - 3) - 18. Multiple-choice3 minutes1 ptFactor
x2 + 9x - 36(x + 12)(x - 3)(x + 9)(x - 4)(x - 12)(x + 3)(x - 9)(x - 4) - 19. Multiple-choice3 minutes1 ptFactor:
p2 - 14pp(1 - 14)2p(p - 7)p2(1-14)p(p - 14) - 20. Multiple-choice2 minutes1 pt
Factor:
x2 + 4xy + 4y2
(x + y)(4x + 4y)
(x + 2y)2
(2x + y)(2x + y)
(x + 2)(x + 2)
- 21. Multiple-choice2 minutes1 pt
Determine the values of a, b, and c for the quadratic equation:
4x2 – 8x = 3
a = 4, b = -8, c = 3
a = 4, b =-8, c =-3
a = 4, b = 8, c = 3
a = 4, b = 8, c = -3
- 22. Multiple-choice2 minutes1 pt
Determine the values of a, b, and c for the quadratic equation:
4x2 – 8x = 3
a = 4, b = -8, c = 3
a = 4, b =-8, c =-3
a = 4, b = 8, c = 3
a = 4, b = 8, c = -3
- 23. Multiple-choice5 minutes1 pt
Use the quadratic formula to solve 2x2 + 2x - 12.
-2, 3
2, 3
2, -3
-2, -3
- 24. Multiple-choice15 minutes1 ptSolve using the Quadratic Formula:
x2 + 4x + 3 = 0x = 1 and x = 3x = 6 and x = -2x = -1 and x = -3 - 25. Multiple-choice2 minutes1 ptDetermine the values of
a, b, and c for
the quadratic equation:
4x2 – 8x = 3a = 4, b = -8, c = 3a = 4, b =-8, c =-3a = 4, b = 8, c = 3a = 4, b = 8, c = -3 - 26. Multiple-choice2 minutes1 ptIdentify the 'a' value: y = 16x2 -8x -24168-8-24
- 27. Multiple-choice2 minutes1 ptSimplify by cancelling1-1Can't be simplified
- 28. Multiple-choice2 minutes1 ptSimplify.1/(n-7)n-7(n-6)/(n-7)n-6
- 29. Multiple-choice2 minutes1 ptFind the least common denominator of the expression186x3xy6xy
- 30. Multiple-choice3 minutes1 ptSimplify:6b + 7b - 103b13b - 1013b2 - 103b2
- 31. Multiple-choice1 minute1 ptSimplify by combining like terms:
5a + 2b - 3a + 48a + 2b + 42a + 2b + 48ab4ab + 4 - 32. Multiple-choice2 minutes1 ptWhat is the first step in solving the equation 2a - 4(a - 5) = 10Add 4 to both sidesAdd the 2a and aDistribute 4 to a and -5Distribute -4 to a and -5
- 33. Multiple-choice3 minutes1 pt8v - 4(v + 8) = 82104-4
- 34. Multiple-choice3 minutes1 pt42-2-4
- 35. Multiple-choice2 minutes1 ptFive times as many as seven is thirty-five5 x 7 = 3535 = 5 x 75 + 7 = 3535 = 5 + 7
