Which of the following is an example of an open equation?
(1 point)
Responses
5x + 7 = 12
5 x + 7 = 12
12 + (–8) = 4
12 + (–8) = 4
25 = 5(5)
25 = 5(5)
8 + 0 = 8
8 + 0 = 8
Which of the following equations has 3 as a solution?
(1 point)
Responses
‒2b = 6
‒2 b = 6
4a ‒ 5 = 12
4 a ‒ 5 = 12
5y = y + 8
5 y = y + 8
z ‒ 15 = ‒12
4a ‒ 5 = 12
Is (1, 5) a solution to the equation y = x – 2?
(1 point)
Responses
yes
yes
no
No
Is (–2, –6) a solution to the equation y = 3x?
(1 point)
Responses
yes
yes
no
Yes
Which of (3, 5), (4, 6), (5, 7), and (6, 8) are solutions to y = x + 2?
(1 point)
Responses
(3, 5) and (4, 6)
(3, 5) and (4, 6)
(4, 6) and (5, 7)
(4, 6) and (5, 7)
none
none
all
(3, 5) and (4, 6) are solutions to y = x + 2.
Which equation would be used to generate the data in the following table?
x y
1 8
2 16
3 24
4 32
(1 point)
Responses
x = 2y
x = 2 y
y = x + 7
y = x + 7
y = 2x
y = 2 x
y = 8x