What is the value of the function y=18x−13 when x=−4?
−13.5 −15 −16 −12.5
To find the value of the function when x = -4, we substitute -4 in the function.
y = 18x - 13
y = 18(-4) - 13
y = -72 - 13
y = -85
Therefore, the value of the function y = 18x - 13 when x = -4 is -85.