Can you help- TEST

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{Need to show my work}

a

Step-by-step explanation:

Hi!

equation to find the midpoint of a segment is

x=(x1+x2)/2

y=(y1+y2)/2

so

x=(7-9)/2=-2/2=-1

y=(-3+9)/2=6/2=3

(-1,3)

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,