Two sidewalks in a park are represented by lines on a coordinate grid. Two points on each of the lines are shown in the tables.
Sidewalk 1
x y
0 3
-1 -1
Sidewalk 2
x y
1 -3
-3 1
(a) Write the equation for Sidewalk 1 in slope-intercept form.
(b) Write the equation for Sidewalk 2 in slope-intercept form.
(c) Is the system of equations consistent independent (one solution), consistent dependent/coincident
(infinite solutions), or inconsistent (no solutions)

(d) If the two sidewalks intersect, what are the coordinates of the point of intersection? Use the
substitution method or elimination methods and show your work.

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.