This 1.12 absolute value pool I need help with this question

What is the slope of a line that is perpendicular to y = 3x + 1

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom