Slope
y = -0.8x + 4
m = -0.8
y = 4x - 4
b = -4
The temperature outside at 9 am is -2 degrees. Every hour, the temperature rises 2.1 degrees.
y = 2.1x - 2
Does the table represent a function?
Look at slide #8!!
Yes
Who weighed more to start?
See slide #12!!
Oscar
(3, -5) and (-4, 9)
m = -2
(0, -1) and (2, 6)
b = -1
Lydia has $130.50 in her savings account. She is going to save an additional $15.00 each paycheck.
y = 15x + 130.50
(2,3) (2,4) (3,5) (4,6)
No
Who lost weight at a faster rate?
See slide #12!!
Valerie
A cell phone company charges a $8.99 monthly fee plus an additional $0.10 per text message sent.
m = 0.10
A car salesman makes $61,520 in a year and an additional $250 for each car he sells.
b = 61,520
Write the equation.
Look at slide #5!!
y = 3x + 3
Does the graph represent a function?
Look at slide #9!!
Yes
Which tree was the shortest to start?
See slide #13!!
Tree B
Find the slope of the graph.
Look at Slide #1!!
m = 2.5
Find the y-intercept.
Look at slide #3!!
b = 1
Write the equation.
Look at slide #6!!
y = 2 1/3 x + 3
Does the graph represent a function?
Look at slide #10!!
No
Order the rates that the trees are going from least to greatest.
See slide #13!!
Tree A, Tree B, Tree C
Find the slope of the graph.
Look at slide #2!!
m = -1/3
Find the y intercept.
Look at slide #4!!
b = -1
Write the equation.
Look at slide #7!!
y = -4/5 x + 1
Does the table represent a linear function?
Look at slide #11!!
No
Write at least 3 sentences comparing the panda's growth represented.
See slide #14!!
Various