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Algebra

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98. Solve the equation -49 = x - 50

x=1?

94. Determine if the following equation is a function: x=2

No?

92. Determine if the following equation is a function: y=5

No?

89. Solve for x in the equation:
6/7x - 6 = -2

I got x=28/3

86. Does the following set of coordinates make a horizontal, vertical, or diagonal line when connected with a straight line? (2,2), (5,2)
a. horizontal
b. diagonal
c. vertical
d. none of the above

A

82. True or False: A function is a relation.

This is a little confusing...

81. If f(x) = 2x + 1, then f(-2)=_____.
-3?

78. If f(x) = 3x - 5, then f(2) = _____.
1?

Write an algebraic expression for the sum of b and --

B+11

  • Algebra -

    92, yes, y=5 is a function.

    82, a function is a relation, but not all relations are functions.

    89 I cant tell what the problem is without grouping symbols.

    All others right.

  • Algebra -

    Thank you :)

  • Algebra -

    98. -49 = x - 50
    add 50 to both sides
    x = 1
    94. no (vertical line is not a function)
    92. yes (horizontal line is a function)
    89. (6/7)x - 6 = -2
    add 6 to both sides
    = (6/7)x = 4
    multiply both sides by (7/6)
    = x = 28/6
    86. a. horizontal
    the y values are the same, so when they are connected, it makes a horizontal line
    82. True, a function is a relation
    81. f(-2) = 2(-2) + 1
    = -4 + 1
    = 3
    78. f(2) = 3(2) - 5
    = 6 - 5
    = 1

  • Algebra -

    5(a-5b)-3(-6a+b)

  • Algebra -

    23a-28b

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