The direction is: Tell whether the function is linear. Then evaluate the function for the given value of x.
1.) f(x) = x+5 ; f(-2)
Help please!!
Can someone help me please, my name is Farrah so please answer those thx.... Its due at 8pm.
hey, y = m x + b is a straight line
this is
y = 1 x + 5
m = 1
b = 5
if x = -2
y = -2 + 5 = 3
To determine whether a function is linear, we need to check if it follows the general form of a linear equation, which is in the form y = mx + b. In this case, our function is f(x) = x + 5.
Since the given function is in the form y = mx + b, where m represents the slope and b represents the y-intercept, we can conclude that the function is indeed linear.
Now, to evaluate the function for the given value of x, which is -2, we substitute -2 for x in the function:
f(-2) = (-2) + 5
Evaluating this expression:
f(-2) = 3
Therefore, when x = -2, the function f(x) = x + 5 evaluates to f(-2) = 3.