Gradient
The slope of (-6, 10) and (4,2)
-4/5
Graph an example of a positive slope
Going up from left to right
Write "Gradient-Intercept Form" of a line
y = mx + c
What is the y-intercept of 5x + 3y = 15?
(0, 5)
What is the midpoint between (0,5) and (0,10)
(0,7.5)
The slope of y=x+5
1
What is the rise and run: y=1/2x+4
rise = 1, run = 2
What is the y-intercept of y = 4x + 7?
c=7
What is the x-intercept for 4x+y=1
x=1/4
Time we go to lunch
12:20
The slope of 2x+y=10
-2
What is the rise and run: Graph y=-3x+1
rise = -3, run = 1
Write the rule for the following scenario: A plumber charges a $55 call out fee, then $70 for every hour they work (n is number of hours).
C = 55+70n
What is the x-intercept of -5x + 10y = 10
(-2, 0)
What is the midpoint between (−5, 2) and (5, −4)
(0,-1)
The slope of x=10
Undefined
Describe how you would graph y = -3
Horizontal line at y = -3
A tree starts out at 6cm tall, then grows 2cm per day. After how many days will it reach 20 cm?
7 days
What is the y-intercept of 3x - y = 4
(0, -4)
What is the distance between the points (1,6) and (−7,3)
sqrt(73) ~= 8.54
The slope (4,5) and (-8,5)
0
Does the point (4,20) go through the line y = 4x+4
Yes
Rearrange the equation 5x - 9y = 45 into standard form
y = -5/9x - 5
The y-intercept of x - 2y = -8
(0, 4)
The midpoint of line segment AB is (2, -5). If the coordinates of point A are (4, 4), what are the coordinates of B?
(0, -14)