98. Solve the equation -49 = x - 50

Question

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

Answer 1

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.

Answer 2

Thank you :)

Answer 3

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

Answer 4

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

Answer 5

23a-28b