Why were americans surprised by the tet offensive?

a. they had expected the offensive to take place months later.
b. the johnson administration had led them to believe that the enemy was not capable of launching a massive attack.
c. they had expected the offensive to take place months earlier.
d. the communists had promised not to launch an offensive.

Step-by-step explanation:

the answer would be d because they didn't promise an offensive launch.

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)