Question 20893
If the number -5 is in the range, this means that f(x) = -5.  The question is to find the element in the domain, that is, find the value of x that corresponds to y=-5.


f(x) = 4x - 9
-5 = 4x -9


Add +9 to each side:
-5 + 9 = 4x -9 +9
4 = 4x


Divide by 4:
x= 1


Ordered pair: (x,y) = (1, -5)


R^2 at SCC