it gives you the formula, so all you have to do is plug in the coordinates

Answer:
40x- 16
Step-by-step explanation:
Because 4 times 10x is 40x and 4 times 4 is 16 so the answer is 40x-16
You must use the t-distribution table when working problems when the population standard deviation (σ) is not known and the sample size is small (n<30). General Correct Rule: If σ is not known, then using t-distribution is correct. If σ is known, then using the normal distribution is correct.