Tuesday

July 22, 2014

July 22, 2014

Posted by **Jman** on Friday, September 13, 2013 at 5:04pm.

Is the equation true, false, or open?

5x + 2 = 6x + 11

a. Open; there is a variable.

b. True; the expressions are the same for all values of the variables.

c. False; the expressions are never the same.

Which ordered pair is a solution of the equation y = x 3?

a. (2, 5)

b. (5, 2)

c. (2, 5)

d. (5, 2)

Which ordered pair is a solution of the equation y = 5x?

a. (2, 10)

b. (5, 25)

c. (3, 15)

d. (2, 10)

Which ordered pair is a solution of the equation y = 7x + 2?

a. (1, 2)

b. (8, 54)

c. (5, 35)

d. (1, 7)

Which equation is an identity?

a. 11 (2v + 3) = 2v 8

b. 5w + 8 w = 6w 2(w 4)

c. 7m 2 = 8m + 4 m

d. 8y + 9 = 8y 3

Solve the following equation.

2(h 8) h = h 16

a. h = 8

b. h = 8

c. infinitely many solutions

d. no solution

Solve the following equation.

3 + 6z = 13 + 6z

a. z = 5/6

b. z = 22/3

c. infinitely many solutions

d. no solution

- Math Help! Ms. Sue! Damon! Steve! -
**Jman**, Friday, September 13, 2013 at 5:06pmOpps! I didn't number them! Oh well.......

- Math Help! Ms. Sue! Damon! Steve! -
**Jman**, Friday, September 13, 2013 at 5:17pmAnybody?

- Math Help! Ms. Sue! Damon! Steve! -
**Steve**, Friday, September 13, 2013 at 7:04pm5x + 2 = 6x + 11

-x = 9

Since you don't have an equation which is always true or never true, it is open.

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y = x 3

what, you can't look at the given pairs and see which has y =x-3?

How about (5,2)

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(d)

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(b)

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(b) Just simplify both sides

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(d) simplify both sides and you have an impossibility

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(d) same thing

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