Find the output of the function y=−3x−7 when the input is −5
. (1 point)
The correct output is
8
Find the value of the function y=3x2−21 when x=4 .(1 point)
y=
.
y= 3(4)^2 - 21 = 3(16) - 21 = 48 - 21 = 27
Therefore, the value of the function y=3x^2-21 when x=4 is 27.
Which of the following functions is proportional?
Function 1: y=x2
Function 2: y=2x
Function 3: y=x+2 (1 point)
Function
is proportional.
Function 2, y = 2x, is proportional because it is a linear function where the output is directly proportional to the input x with a constant of proportionality of 2. This means that as x increases, y will also increase in a direct proportion.
When the input is x=0.3 , which of the following is the output of the function y=3x+6 ?(1 point)
Responses
6.3
6.3
6.9
6.9
9
9
0.3
To find the output of the function y=3x+6 when x=0.3, we substitute x=0.3 into the function.
y = 3(0.3) + 6
y = 0.9 + 6
y = 6.9
Therefore, the output of the function y=3x+6 when x=0.3 is 6.9.
The correct response is 6.9.
What is the value of the function y=18x−13 when x=−4 ?(1 point)
Responses
−15
negative 15
−12.5
negative 12.5
−13.5
negative 13.5
−16
To find the value of the function y=18x-13 when x=-4, substitute x=-4 into the function.
y = 18(-4) - 13
y = -72 - 13
y = -85
Therefore, the value of the function y=18x-13 when x=-4 is -85.
The correct response is -85.