What is the value of the function y=18x−13 when x=−4 ?(1 point)
Responses
−13.5
negative 13.5
−16
negative 16
−12.5
negative 12.5
−15
When x = -4, we can substitute it into the function y = 18x - 13:
y = 18(-4) - 13
y = -72 - 13
y = -85
Therefore, the value of the function is -85.
To find the value of the function y=18x−13 when x=-4, substitute -4 for x in the equation:
y = 18(-4) - 13.
Simplifying this equation, we have:
y = -72 - 13 = -85.
Therefore, the value of the function when x=-4 is -85.
To find the value of the function y = 18x - 13 when x = -4, we need to substitute -4 for x in the equation and solve for y.
Step 1: Start with the original equation y = 18x - 13.
Step 2: Substitute x = -4 into the equation: y = 18(-4) - 13.
Step 3: Simplify the equation: y = -72 - 13.
Step 4: Perform the subtraction: y = -85.
Therefore, when x = -4, the value of the function y = 18x - 13 is -85.