4. for each of the following pairs of vectors v1 = (x1, y1) and v2 = (x2, y2) in (a)–(e), carry out the following steps: (i) the lines through v1 and v2 generate a grid (of parallelograms) on the xy-plane. sketch v1, v2, and this grid. (ii) find the area of one of the parallelgrams by computing the determinant of the matrix x1 x2 y1 y2 . is this matrix invertible? (iii) determine whether {v1, v2} is a basis of r 2 .

answer: plz put a pic in so i can answer it

step-by-step explanation:

i use my brain for prombles like this maybe you could try it

step-by-step explanation:

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,