The dimension of the null space of A is R^4 because (select all correct answers -- there may be more than one correct answer): A. The basis we found for the null space of A has three vectors. B. rref(A) is the identity matrix. C. rref(A) has three free variable columns. D. Three of the four columns in rref(A) do not have a pivot. E. rref(A) has one free variable column. F. Two of the four columns in rref(A) have pivots. G. rref(A) has a pivot in every ro

the function makes a strait line horizontally with no x intercept but a y intercept at 9.

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.

correct answer is b. 27/8

step-by-step explanation:

2

step-by-step explanation: