What is the range of the function y = |x |?

x ≥ 0
y ≥ 0
all real numbers

What is the value of x when x + 7 = 21?

Find the equation of a line that is perpendicular to line g that contains (p, q). coordinate plane with line g that passes through the points negative 3 comma 6 and 0 comma 5 3x − y = 3p − q 3x + y = q − 3p x − y = p − q x + y = q − p

What is the slope of the line that passes through ( 1,4) and (1,-3)