Slope
What is the definition of slope?
Rise/Run; the vertical change over the horizontal change
What is the definition of the x-intercept?
The x coordinate of the point where a line touches the x-axis.
What is the x-value of the following systems of equations:
y=x+4
y=2x+5
-1
What method would you use to see if expressions are equivalent?
Store the number
To solve for a missing value given an equation, what would you press on the calculating page?
Ex: Solve for x when -4(3-x)=2x
Menu 3, 1
What is the slope of the line that goes through the points (0,1) and (2,7)?
3
What is the "zero" of a function?
Another word for the x-intercept
Write a system of equations for the following problem:
Each polio vaccination consists of 4 doses, and each measles vaccination consists of 2 doses. Last year, Dr. Potter gave a total of 60 vaccinations that consisted of a total of 184 doses.
x is the number of polio vaccinations and y is the number of measles vaccinations.
4x+2y=184
x+y=60
What is the point and the slope given in the following point-slope form?
y + 2 = -4 (x - 8)
(8,-2) and m=-4
A question asks you to find the equivalent expression, but the calculator responds with "invalid multiply entry". What did you forget to do?
A line that goes up when looking from left to right has what kind of slope?
Positive
What values of a function make the domain?
All the possible x-values of a function. (Obtained from looking at the highest and lowest possible x-values)
The cost of a pizza "varies directly" as the square of its radius. If a pizza with a 6 inch radius costs $8.00, how much should a pizza with an 11 inch radius cost?
26.89
Find the rate of change of the following two points on a line: (2,3) and (6,5)
rate of change= 1/2
To store your favorite number in for a letter, what must be pressed in the calculator?
# CTRL, STO, letter
What is the slope of the graph of y=-5x+7 ?
-5
What makes the range of a function?
All the set of possible y-values of a function (obtained from looking at the highest and lowest possible y-values)
The weight of an object on Earth "varies directly" as the weight of the same object on the moon. A 300 pound object would weigh 48 pounds on the moon. How much would a 65 pound object weigh on the moon?
moon=10.4 lbs
If you are given a point and slope in an equation, but are missing the y-intercept, what would you do to solve for the y-intercept?
Plug in the point where the x and y belong and solve for b.
Given a system of equations. The problem asks you to find the corresponding graph. How would you use the calculator?
Type in both equations on the graphing page using Menu, 3, 2 and then match it with the answer choices.
What is the slope of the graph of the following line: 4x+y=7?
-4
When asked to find the rate of change of a problem, is is the same as them asking for...
Slope of the graph/points/table
Tell me the shading and type of line for the following inequality: y> 2x-6
Top, Dashed
To graph any equation on the graphing page of a calculator, what would you press on the calculator to insert an equation of any form?
How do you unbold a letter that has a stored value in it?
Menu, 1, 4