12. a(-1.5), b(2,5), c(2, 2) and dc-1, 2)are the vertices of a square abcd. find the image of square
abcd under the combined transformation rot where r is the rotation about origin o through -90p,
and t = . also show it graphically.

The $x$-intercepts of the parabola $y = x^2 + bx + c$ are $(-3,0)$ and $(5,0).$ find the equation of the parabola, and submit your answer in $y = ax^2 + bx + c$ form.

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.