100 Points, though please do hurry.

hope you get a answer

Step-by-step explanation:

In order for a function to be linear, the power of the variable x must be 1.

Linear functions are a straight line. Non-linear have a curve and an exponent higher than 1.

Step-by-step explanation:

y = x/2 -19   That is linear

3y = x^2   That is parabolic  (not linear)

13y = 1/3x+5   That is linear

y = x +25/5   That is linear

y^3 =x      That is a cubic equation  (That is not linear)

i will take them

step-by-step explanation:

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.