Calculating Slope
Transformations
Writing Equations of Lines
Equations from word problems
100
What is slope formula and what does it mean?
y2-y1/x2-x1
rise / run
100
Name the 3 RIGID Transformations (the size doesn't change) and the one NON RIGID transformation (the size changes).
Rigid: Translation, Reflection, Rotation
Non Rigid: Dilation
100
In y=mx+b, what do m and b stand for?
Slope and y-intercept
100
For babysitting Nicole charges a flat fee of $3 and an hourly rate of $5. Write an equation in y=mx+b form where y represents her earnings and x represents hours.
C = 5h + 3
or
y = 5x + 3
200
Find the slope:
Undefined
200
What transformation took place, be specific:
Translation up 2 right 5
200
Write the equation of the line in y=mx+b form:
y= -3/2x+4
200
Angela starts with 238 home made bracelets to sell. She sells 10 bracelets a day. Write an equation in y = mx + b form where y represents the number of bracelets she has and x represents days.
y = -10x + 238
300
Find the slope:
3/5
300
Name the transformation and be specific:
Rotation 180 degrees (either direction)
300
Write the equation of the line in y=mx+b form:
y=3x+2
300
y = 30x+20
y=30(6)+20
y=$200
400
Find slope:
-7/3
400
Name the transformation / specifics:
Reflection over the y-axis.
400
Write the equation of the line in y=mx+b form given the two points:
y=2x+1
400
y = her total earnings
x = each hour she works
92 = m(8)
92 / 8 = $11.5
y = 11.5x
500
Find slope:
2/3
500
What transformation has taken place and what are the specifics?
Dilation, SF: 1/2
500
Write the equation of the line in y=mx+b form from these two poitns:
y=-x+5
500
Joe's bank account has a balance of $-1000. He earns $200 a week. Write an equation in y=mx+b form that represents his bank account where y is total money and x is weeks.
How many weeks will it take for his bank account to have $400 in it?
y= 200x -1000
400 = 200x - 1000