Write an equation in Slope-intercept form
Slope = -4
y-intercept = 5
y= -4x + 5
(5, 7) and (3, 6)
What is 1/2?
What is the equation for slope intercept form?
y = mx + b
Which point is a y-intercept?
(0, 4) or (4, 0)
(0, 4)
Which slope is steeper?
4 or 1/4
4
Slope = 1
and the line passes through the origin
y = x
(6, 8) and (-3, 10)
- 2/9
What is the slope?
y = 3x - 5
m = 3
The measure of the steepness of a line
What is slope?
Which slope is steeper?
3/4 or 1/2
3/4
Slope = -3
Y-intercept = -5
y= -3x - 5
(4, 6) and (-2, -10)
8/3
What is the y intercept?
y = -3x - 7
b = -7
True or false:
Every line has a y-intercept
False
Vertical Lines do not
What is the slope of a horizontal line?
m=0
I have $45 in my account and I add $10 each week to the account.
y= 10x + 45
(2,3) and (9,7)
What is 4/7?
What equation has:
Slope: 1/2
Y - intercept: -3
y = 1/2x - 3
How do you find slope on a graph?
Calculate/count the vertical change (up/down), over the horizontal change (side to side)
Which slope is steeper:
5/5 or -3/2
-3/2
I have $90 in my account but I spend $20 each week.
y = -20x + 90
(7,10) and (7, -5)
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Given: y = -1/3x
Find:
m=
b=
m = -1/3
b = 0
What is the slope formula?
(y2-y1 ) / ( x2-x2) or rise/run
Which slope is flatter?
-6 or -1/6
-1/6