Which of these statements are true for joint variations? Check all that apply.
There are at least two constants of
proportionality
The independent variable is related to the
product of the independent variables by a
constant of proportionality, k.
The equation must have at least two
independent variables.
The constant of proportionality is 1.

12. decide whether each statement is always true, sometimes true, or never true. a. when corresponding points of an original figure and its reflection are connected, the resulting segments are all perpendicular to the line of reflection. b. when a point is reflected over a horizontal line, the y-coordinate of the point stays the same. answer both questions and explain

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.