Answer:
The last option
Step-by-step explanation:
You take the middle 2 numbers, add them up, and divide by 2.
6-6a=3a-3b+1, 9a-3b=5
<span>4b - 8 =3a, 3a-4b=-8
</span>
9a-3b=5
(3a-4b=-8 )*(-3 )
9a -3b= 5
-9a+12b=+24
adding both equations
9b=29, b=29/9
3a=4b-8=4*29/9 -8=(4*29-8*9)/9 = 44/9
a=44/27
a-b=44/27 - 29/9=44/27 - 29*3/27=-43/27
this is a correct answer, unfortunately they do not have this choice, probably they made mistake somewhere. I even check the solution of equations by substitution values of a and b into equations
Answer: (0,-7)
Steps: To find y-intercept, substitute x=0
f(0)= -7-3×0+g×0^3 +0^2
Multiply & Evaluate powers
f(0)=-7-0+6×0+0
Remove zeros. Multiply.
f(0) -7+6×0 → f(0) -7+0
Remove the zero
f(0)=-7
Hope this helps ʕ•ᴥ•ʔ
