Math 124 Exam 1 questions and correct answers passed

Math 124 Exam 1 questions and
correct answers passed

How to find the limit from the graph? - correct answer ✔✔ -Find the Y value at the x value.

-If there is a jump then the limit is undefined



How to plug the hole in continuous equations? - correct answer ✔✔ -Find the hole

-Then make the next equation equal to what the whole is equal to



What is the difference quotient? - correct answer ✔✔ f(x+h)-f(x)/h

-put x+h wherever you see x in the equation



In the graph of the derivative, what do the Y values represent? - correct answer ✔✔ The Y
values in the derivative graph represent the slope of the f(x) graph. Therefore, when f'(x) is
above the x axis f(x) graph is increasing.



When is f'(x) positive? - correct answer ✔✔ When f(x) is increasing



How to find the equation of a tangent line? - correct answer ✔✔ 1. find the formula of the
derivative

2. plug x value into f(x) equation to find point

3.plug x value into formula to find slope

4.use point to find b



Q(P) is the quantity of TT inspired sold TT inspired if the price is T dollars. Interpret Q(150)=200 -
correct answer ✔✔ If the price is 150 dollars for each calculator, then 200 calculators are sold.