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Linear Equations
study cards
9
Mathematics
8th Grade
12/13/2016

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Cards

Term
Slope -Intercept Equation of a line
Definition
y = mx + b
Term
Slope
Definition

How steep a straight line is.


rise 

run

change in y

change in x

Term
Slope formula
Definition

y2-y1

x2-x1

Term
Draw a line y = 1/2x + 4
Definition
[image]
Term

find the slope using two points

(2, -3) and (-4, 7)

Definition

y2-y1

x2-x1

7--3

-4-2

10

-6

-5

3

Term
Slope from the graph
Definition
[image]slope = 4/6 = 2/3
Term
Write an equation of a line from slope and y-intercept
Definition

m = 1/2 b = -4

y=1/2x -4

Term
Find slope and y-intercept from an equation of a line
Definition

y = -4x + 2

m =-4      b = 2

Term
Special cases
Definition

y= 5  vertical line (slope is undefined)

x= -2 horizontal line (slope is zero)

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