What is the value of the function y=18x−13 when x=−4 ?(1 point)
Responses
−12.5
negative 12.5
−13.5
negative 13.5
−16
negative 16
−15
To find the value of the function when x = -4, we substitute -4 for x in the equation y = 18x - 13:
y = 18(-4) - 13
y = -72 - 13
y = -85
So, the value of the function y = 18x - 13 when x = -4 is -85.
What is the value of the function y=1/8x−13 when x=−4 ?(1 point)
Responses
−12.5
negative 12.5
−13.5
negative 13.5
−16
negative 16
−15
To find the value of the function when x = -4, we substitute -4 for x in the equation y = (1/8)x - 13:
y = (1/8)(-4) - 13
y = -1/2 - 13
y = -13.5
So, the value of the function y = (1/8)x - 13 when x = -4 is -13.5.
To find the value of the function y = 18x - 13 when x = -4, we can substitute the given value of x into the function and compute the result.
Plugging in x = -4 into the function, we have:
y = 18(-4) - 13
y = -72 - 13
y = -85
Therefore, the value of the function is -85.