Line a: (–1, 2), (1, 8)
Line b: (–3, –4), (2, 11)

ma = 8 − 2
1 − (− 1)
= 6
2
= 3
mb = 11 − (−4)
2 − (− 3)
= 15
5
= 3
Slope of the line through (1, 8) and (2, 11)
m = 11 − 8
2 − 1
= 3
1
= 3

How many points of intersection are there between line a and line b?
zero
one
two
infinitely many

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?

Arandomized controlled trial is designed to evaluate the effect of metoprolol in patients with heart failure. while preparing for statistical analysis, the researcher reviews some common types of statistical errors. which of the following statements is true regarding a type i error in a clinical study? a. the study is not significantly powered to detect a true difference between study groups. bthe null hypothesis is true but is rejected in error. c. the null hypothesis is false but is accepted in error. d. type i error is also known as beta and is usually 0.1 or 0.2. e. type i error depends on the study's confidence interval.