ROC/Slope Vocab/Practice

What is a linear equation?

• An equation where the line doesn't pass through the y or x axis

• An equation that forms a straight line when graphed

• An equation that shows y always = 0

• An equation that shows x always = 0

What is slope?

• two points

• run over rise

• Division of vertical change by horizontal change between two points

• Change in x over change in y

When finding slope from a graph...

• use change in y over change in x

• locate two points and create a right triangle, then rise over run

• x coordinate divided by the y coordinate

• pick only two negative points on the graph and subtract

When finding slope from a table....

• Use y = mx+b

• Use y1-y2, x1-x2

• Use m = change in x / change in y

• Use m = change in y / change in x

When finding slope from a set of points...

• Use (m = y2 -y1 / x2 - x1)

• Use change in y / change in x

• Use (m= y1-y2 / x1-x2)

• Use y = mx+b

Rate of change is finding the...

• f(x)

• y-intercept

• slope

• x coordinate

If the rate of change is -2/1, what kind of change is this?

• positive

• zero

• neither

• negative

If the rate of change is 2/0, what kind of rate of change is this?

• zero

• undefined

• 2

• -2

Given points (5,2) and (4,-1), what is the slope?

• m = -3

• m = 1/3

• m = 3

• m = -1/3

If a rate of change is -1/-2, what kind of rate of change is this? (think carefully)

• positive

• negative

• zero

• neither