Answer:
9.7 inches
.
Explanation:
From the table, the linear function must pass through the points (19,10.2) and (21,9.8). Use the slope formula to find the slope between these two points:
m amp;=
y2−y1
x2−x1
amp; amp;Slope formula. amp;=
9.8−10.2
21−19
amp; amp;Substitute. amp;=
−0.4
2
amp; amp;Subtract. amp;=−0.2 amp; amp;Divide.