How can you tell if an equation is linear or non linear?

Select the stopwatch, and time how long it takes for a weight to oscillate back and forth 10 times (a single oscillation is represented by a return to a weight's original position). The period of oscillation T is this time divided by 10.

A sofa is 8 feet long. In scale drawings, the sofa is 3 inches long. Find the scale of drawing

I need a word problem for 4x + 5 = 37

For the equation, y = - 3x + 5, tell whether its graph passes through the first quadrant

What is a factor of 77

How to i make this number sentence correct with adding parenthesis? 4² + (-3) - (-5) * 2 = 20

Are the ratios 5:15 and 1:3 equivalent

Find a rational number halfway in between the two numbers 7/8 and 2/7

Bag a contains 7x counters bag b contains 2x counters Five counters are taken from bag a and put in bag b

Angela and Doreen each want to buy the same comb. Angela still needs 58 cents to buy a comb and Doreen still needs 6 cents. If they want to combine their money, they still do not have enough. What is the most the comb could cost?