What is the value of the expression 9x2 - 12x + 4 when x = 3? 22
49
O
85
d
697

9514 1404 393

  (b)  49

Step-by-step explanation:

Put the value where x is in the expression and do the arithmetic.

  9x² -12x +4   for x=3

  9·3² -12·3 +4 = 9·9 -36 +4

  = 81 -36 +4 = 49

c

step-by-step explanation:

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0