In augmented matrix form, the system is equivalent to
Subtract row 1 from row 2, and 4(row 1) from row 3:
Divide through row 2 by -2, and through row 3 by -3:
Subtract row 2 from row 3:
Divide through row 3 by 2:
The last row tells you 
. Then
and
Answer:
I believe it's C.
Step-by-step explanation:
Hope my answer has helped you!
The x-intercept is the y value when x is zero. so if you plug it in y = -0 so the x intercept is zero. and for graphing it is just point = (-x, x) so if x = 1 then the point is (-1, 1) etc
Okay, so the top numbers are how many pieces we have, and the bottom number is how many pieces there are, think of it like a pizza. If the pizza is cut into 8 slices and you have one slice, you have a smaller piece of pizza than one slice from a pizza that was only cut into 6 pieces, which is smaller than one slice from a pizza that was only cut into 3 pieces. The more pieces there are, the smaller the pieces are, so the bigger the bottom number is, the smaller the fraction is.
16.4 that is the answer! Use tan(64)*7
