y = mx + b vocabulary
Which is a y intercept? ( 6, 10), (2, 0 ) or (0,4)
(0, 4)
y-intercept (also known as "b" in y = mx + b)
* starting point * constant * one-time fee: entry fee, service charge, starting balance, set up fee
What is the y-intercept of a line that passes through the points (10,0) and (0, -3)?
-3
What is the slope of the line that passes through (2,4) and (6, 12)?
2
What is the slope of a line that passes through the points (-2,-6) and (2,6)?
3
What is the y-intercept of a line that passes through the points (0,4) and (-6,0)?
4
When the slope is negative, the line goes ____ from left to right.
Down
The "x-axis" is the line on a coordinate grid that goes _______.
Left to right
When the slope is positive, the line goes _____ from left to right.
Up
The "y-axis" is the line on a coordinate grid that goes ________.
Up and down
y-intercept on a graph
Where the line crosses the y axis x = 0 (0, Y)
Given a slope of -3 and a y-intercept of 2, write an equation of the line.
Y=-3x+2
rate (m or slope) from a story sentence
amount per item or each $15 each, $20 per hour
y-intercept from a table
at ordered pair (0,b), point where x = 0
y- intercept in an equation
b in y = mx + b
In y=mx+b, what letter represents the slope?
m
m (slope) from y= mx + b
rate of change slope rise over run
What does "rise over run" refer to? What does "change in y over change in x refer to?
slope
slope of a VERTICAL line
undefined
What is the point at which the graphed line crosses the y-axis called?
y-intercept
Given a slope of 2 and a y-intercept of -3, write the equation of the line.
y=2x-3
Equation for a line
y=mx+b
slope of a HORIZONTAL line
zero