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Final Jeopardy
Slope-Intercept
Form
Point-Slope
Form
Standard
Form
Parallel &amp;
Perpendicular
Lines
Scatter Plots
100 Point
100 Point
100 Point
100 Point
100 Point
200 Points
200 Points
200 Points
200 Points
200 Points
300 Points
300 Points
300 Points
300 Points
300 Points
400 Points
400 Points
400 Points
400 Points
400 Points
500 Points
500 Points
500 Points
500 Points
500 Points
Find the equation of the line
that has a slope (m =) of 4
and passes through the point (–1, –6).
y = mx + b
(–6) = (4)(–1) + b
–6 = –4 + b
–2 = b
The answer is “y = 4x – 2”.
Find the equation of a line
using the two given points:
(–2, 4) and (1, 2).
First you have to find the slope
M = (4)-(2)/(-2)-(1) = -2/3
Then you have to solve the equation:
y = mx + b
4 = (-2/3)(–2) + b
4 =4/3 + b
4 – 4/3= b
b = 8/3
The answer is “y = ( – 2/3 ) x + 8/3.”
Find the equation of a line that
passes through
the given points:
(-4,5) (6,18).
First you have to find the slope of the line:
M = 18-5/6-(-4) = 13/10
Then you have to solve the equation:
y = mx+b
(18)=13/10(6)+b
(18)=7and 4/5+b
10 and 1/5=b
The answer is “y = 13/10x+10 and 1/5”.
Write an equation for Line P in Slope-Intercept Form.
y = mx+b
y = -5/2x+0
“y= -5/2x”
Word Problem:
A car costs a down payment of
\$13,246. Every month you pay
\$353 on the car. Set up an
equation to describe this. Then
How much money would you
pay on the car after 6 months?
Equation:
“y =353x+13246”
Using the equation:
y = 353(6)+13246
The answer is “y = 15364”.
What is the
equation for PointSlope Form?
“y-y =m(x-x )”.
1
1
Write the equation of
a line in Point-Slope
Form that has a slope
of 5/3 and a point of
(10,6).
“y-(6)=5/8(x-(10))”.
Find the equations of
the line that passes
through the given
points in Point-Slope
Form:
(8,5) (11,9).
First you must find the slope of the line:
M =9-5/11-8 = 4/3
Then use a point and put it in Point-Slope
Form:
“y-5=4/3(x-8)”
OR
“y-9=4/3(x-11)”
Write the Equation represented by the graph
in Point-Slope Form.
“y-(2)=4(x-(1))”
OR
“y-(-2)=4(x-(0))”.
Word Problem:
In order to use an excerpt from a movie in a
new television show , the television producer
must pay the director of the movie \$790 for
the first 2 minutes of the excerpt and \$130
per minute after that.
Write an equation that gives the total cost (in
dollars) of using the excerpt as a function of
the length (in minutes) of the excerpt.
Then find the total cost using an except that
is 10 minutes long.
The answer is “y = 130x+530.”
Using the equation the answer is
“y= \$1830”.
What is the
equation for
Standard Form?
“Ax+By=C”.
Write the following
Equation in
Standard Form:
y-(-6)=2/3(x-3)
First you have to distribute:
y+6=2/3x-2
Then you solve.
“-2/3x+y =(-8)”.
For the information
below write an
equation in Standard
Form:
Slope of -3/2 and a
point of (-4,4).
First you must put into either Point Slope
Form or Slope Intercept Form.
In this example of solving the equation is in
Slope Intercept Form.
(4)=-3/2(-4)+b
4=6+b
-2=b
Then Put into Standard Form.
Write an equation
in Standard Form
using the two pints
given:
(0,-1) (-6,-9)
“-4/3x+y =(-1)”.
Describe and correct the error in
finding
the value of A for the equation
Ax-3y=5, if the graph of the
equation
passes through the point (1,-4)
A(-4)-3(1)=5
A=(-2)
(1,-4) was substituted incorrectly,
1 should be substituted for x
and -4 should be substituted for y
Then “A=(-7)”.
What is one way
you can tell if an
equation is
Parallel?
“Parallel Lines
have the same
Slope.”
How can you tell if
Lines are
Perpendicular?
Hint*- You must have all parts to get full
point value.
“Perpendicular lines
have slopes of
(opposite) reciprocals
and one of the slopes is
negative.”
Write an equation
parallel to y = 2x+2
And goes through
the point (-1,5).
The Slope is the same.
However you must find the y-intercept.
“y=2x+5”.
Write an equation of the
line that is Perpendicular
to 4y+2x=12 and passes
through (8,-1).
First you must turn the equation
into Slope Intercept form.
Then solve using the point given
for the y intercept.
Then you must do the opposite
reciprocal.
“y=2x-17”.
While nursing, blue whale caves can gain
weight at a rate of 200 pounds per day. Two
particular calves weight 6000 pounds and
6250 at birth.
Write equations that model the birth of each
calf as a function or the number of days
since birth.
How are the equations related?
Hint*- Are they Parallel of Perpendicular?
w=200d+6000
And
w=200d+6250
They are Parallel and have
the same slope.
What is the Zero of
the function?
“A zero of a
function is when
f(x)=y and f(x) or y
equals zero.”
What is the zero of function
for the following equation?
f(x)=2/3x +9
“-13 &frac12;”.
What is the
difference between
Positive, Negative,
and No
Correlation?
“Positive- y increases as x
increases,
Negative- y decreases as x
increases, and
No Correlation- there is no
apparent relationship between x
and y.”
Which of the following would best represent the
correlation between ice cream sales in the
summer.