Dilations
A dilation is when a shape....
gets proportionally bigger or smaller
How to get the account balance for a simple interest problem
I=PRT
then A=P+I
is where the line crosses the y-axis
This calculator function can solve any equation
menu 3 1 or nSolve
The STAAR for math is on...
Thursday, May the 4th (be with you)
Scale factor is...
how much bigger or smaller a shape gets, new/old
How to get the interest from a compound interest problem
A=P(1+r)^t then A-P=I
Slope is...
m = rise / run = how steep or shallow a line is
1 - - 13 =
14
How many ounces are in a pound?
16 ounces = 1 pound
How would you write the rule for a shape that was reduced by a third?
(x,y)-->(1/3x, 1/3y)
Ms. Scarff is saving for a house and puts $10,000 in a savings account that earns 3.5% compound interest. How much interest will she earn in 18 months?
$529.57
True or false? I can count the boxes to find rise / run. Explain.
Sometimes true, usually false because the x-axis and y-axis would have to count by 1 in order to just count the boxes.
What equation describes the following problem:
Ms. Morris is going on a field trip. She doesn't know how many students (x) are going, but she needs to order 3 meals for each student. She also orders five meals just in case. What equation represents the number of meals (y) Ms. Morris should order?
y = 3x + 5
If Rachel's cart at Target is $28 and the sales tax is 6.25% in Texas, what is her total?
$29.75
Triangle ABC is dilated by 1/4. If point B is (0,-4) where is B'?
(0,-1)
David deposits $5,000 into a savings account that earns 6.5% simple interest annually. If he doesn't touch the account, how much will he have in the savings account in 18 months?
487.5 + 5000 = $5,487.50
The equation of a line / slope intercept form...
y=mx+b
Solve the inequality: 2 - d < 10
d < -8
If two angles are complementary, that means...
when you add them, they equal 90 degrees
If rectangle LMNO is dilated from L(21,7) to L'(3,1) what was the scale factor?
The scale factor was 1/7
Cristian deposited $9,500 into a compound savings account for 24 months at a rate of 0.5%. How much interest would he earn if he does not make any withdrawals or deposits?
$95.24
A line includes the points (4, 5) and (6, 9). What is its equation in slope-intercept form?
y=2x-3
Solve for x.
x + 5 = 2x - 3
x = 8
Find the distance between (5,7) and (-1,-3)
rise / b = 10
run / a = 6
distance / c = 11.66
M= 5/3 = 1.666
B=(0,-1.3333)