LINEAR EQUATIONS
& RELATIONSHIPS
& RELATIONSHIPS
Which value cannot repeat in order to represent y as a function of x?
X
This is the formula for the volume of a sphere.
4/3*pi*r3
The word "diagonal" describes which side of a right triangle?
"c" or hypotenuse
This is the word used when changing a decimal to a fraction or visa versa.
Convert
To determine the type of association a set of data represents, it is suggested to draw a "line of best ____."
fit
This is another name for "the point where two lines intersect".
solution
What type of transformation is represented with the algebraic rule (x,y) -> (0.9x, 0.9y) ***Bonus: describe what happened to the pre-image
DILATION--- DOUBLE BONUS: it got 0.9 times smaller
This is the only type of triangle which uses the Pythagorean Thereom to find the length of a side.
right triangle
a plus sign (+)
Write an equation describing a person who deposits 3500 into an account that is compounded annually and earns 4.5% interest for 18 months.
3500(1+4.5%)1.5
15 school lunches is 33.75. How much would 8 lunches cost?
$18
What is the formula for B in the formula V=1/3 Bh?
pi*r2
The number of degrees in a straight line.
180
Which number is greater and why?
-23 or -4
-4 because it is closer to zero
How do you find the balance for an account that was opened with a deposit of $1,250 and earned 4.25% simple interest for four years?
Use the formula for simple interest (Prt) to multiply the principal times the rate in percent times the time in years to find the interest only and add it to $1250
Write an equation describing a person who pays a one-time fee of $24 and $8 for each shirt he/she buys.
y = 8x + 24
Which is the only transformation that does not preserve congruence?
dilation
The total measurement of angles inside of a triangle is what?
180o
J.K.!!!Does the following set of ordered pairs represent a function? Why or why not?
(-2, 2), (1, 1), (2, 2), (-1, 1)
YES
This type of association describes a person with 20 absences and his/her math scores.
Negative association
Write an expression describing a situation where an aquarium contained 54.6 gal of water and began to leak at a rate of 0.8 gallon per minute.
-0.8x + 54.6
Which value (x or y) becomes its opposite when reflected over the y axis?
x
Solve: The diagonal of a rectangle is 17 cm and its width is 8 cm. What is the rectangle's length?
15
Write 0.00007895 in scientific notation
7.895 X 10-5
What do the letters "P" "r" and "t" represent? Distinguish what they mean.
Principal (money), rate (%), and time (in years)