Shapes
Quadrilateral
How do you find the perimeter of a shape?
Add up all the side lengths
What type of line is created with graphing a simple interest equation?
Linear
What characteristic does a compound interest equation have when graphed?
Curved
y=abx
A triangle that has 3 congruent sides.
Equilateral Triangle
Find the midpoint of AB
A(2,10), B(-6,-22)
(-2,-6)
y=mx+b
t(n)=mn+b
What is the equation for compound interest?
t(n)=a(1+(r/p))n
What "b" values causes an exponential equation to not curve?
b=1
A quadrilateral with 2 pairs of parallel lines.
Parallelogram
When do we need to use Pythagorean Theorem?
Finding the length of a line that is not horizontal or vertical.
If $300 is in an account that earns $20 every month, how much is in the account in 9 months?
$480
Write the equation of an account that starts with $620 and decreases 7% annually.
y=620(0.93)x
Write an exponential equation that has solutions at (1,3) and (2,12)
y=3/4(4)x
Name the shape:
Length: AB=3, BC=4, CA=5
Slope: AB= 3/0, BC=0/3, CA=-3/4
Scalene Right Triangle
Solve for c.
72+122=c2
c=13.892
$550 is in an account that earns 15% simple interest annually. How much interest is earned every term?
$82.50
Cyril has $13000 in an account growing 12% annually. How much is in the account in 10 years?
$40,376.02
Write an exponential equation that has solutions at (0,2) and (6,222)
y=2(2.19)x
Name the shape:
Length: AB=4.5, BC=4, CD=4.5, DA=8
Slope: AB=4/2, BC=4/0, CD=-4/2, DA=8/0
Isosceles Trapezoid
Find the length of AB
A(-2,3), B(4,9)
AB=8.485
$750 is in an account that earns 21% simple interest annually. How much is in the account in 12 years?
$2640
Hunter has an account that has $943 and has a 22% annual interest rate compounded quarterly. How much is in it after 8 years?
$5,231.06
Write an exponential equation that has solutions at (-2,4) and (6,480)
y=13.24(1.82)x