Answer:
40°
Step-by-step explanation:
It's half the angle at the centre
½×80 = 40
Answer:
The first graph would be correct
Step-by-step explanation:
It passes through the center of the points. (2)
When doing a line of best fit, you want the line to have equal number of points on either side of the line.
12/-30=8x
cross multiply
12x=-240
x=-20
The y-intercept (where the line hits the y-axis) will move from (0, 1/2) to (0, -2)