Answer:
We have been given the scatter plot:
(a)We can clearly see from the plot that there is direct proportion between the number of hours of homework and test scores.
Direct proportion means if hours of homework increases then test score increases and vice-versa.
(b) we have been given a function y=8x +40
We need to predict for 3 hours of homework put x=3 in above function as x represents hours of homework we get:
y=8(3)+40
y=24+40
y=64
Hence test score will be 64 for 3 hour of homework.
(c) 40 means the test score when there is x=0 means 0 hours o homework.
