36 terms

This is a set of flashcards to help with algebra in your math class! Enjoy :)

(2,1) (0,1)

0

(3,2) (3,9)

Undefined

(4,2) (5,3)

1

Slope

The steepness of a line

Y-Intercept

Where a line crosses the y-axis

Positive Slope

A line that goes up to the right

Negative Slope

A line that goes up to the left

Zero Slope

A horizontal line

No Slope/Undefined

A vertical line

Slope-Intercept Form

y=mx+b

Slope (in words)

Rise over Run

Slope (from a table)

Change in y over change in x

m=(what does m stand for)

Slope

b=(what does b stand for)

y-Intercept

What is the y-intercept

Where the line crosses the y axis

y=3x+2 What is the slope

3

y=-2x-8 What is the slope

-2

y=6x+5 What is the y-intercept

5

y=2x-9 What is the y-intercept

-9

On a table how do you find b?

When x is zero

Is a point a solution of a line?

If the line goes through that point when graphed

y=3x+7

slope=3 y-intercept=7

y-2=2(x-3)

slope=2 y-intercept=2

y=1/2x-1

slope=1/2 y-intercept=-6

3x-4y=24

slope=-3/4 y-intercept=-6

y-1=-5(x+2)

slope=-5 y-intercept=1

y=3x-1

slope= 3 y-intercept=-1

-x+3y=9

slope= 1/3x y-intercept=3

5x-20y=60

slope= 1/4y-intercept=15

y+3=-2(x-1)

slope= -2y-intercept=-3

y=-4x+2

slope=-4 y-intercept=2

Rate of change

ratio of the change in the y-coordinates(rise) to the change in the x-coordinates(run)as you move in the positive directionratio that describes, on average, how much one quanitity changes with respect to a change in another quantity

Rate of change definition

change in y/change in x

slope of a line

the change in the y-coordinates(rise) to the change in the x-coordinates(run)as you move in the positive

the slope of a line that passes through (-1,2) and (3,4) is positive,negative or undefined

Positive slope

the slope of a libe that passes throught the points(-1,-2) and (-4,1) is it positive, negative or undefined

Negative slope