Rate of change

Presentation

•

Mathematics

•

7th - 9th Grade

•

Medium

Carrie Herman

Used 27+ times

FREE Resource

2 Slides • 14 Questions

Review of Rate of change, Slope Introduction, Standard form

Rate of Change - Quick facts:

Rate - compares two different units (miles/hour)
Rate of change looks at how it changes
To find the RoC, we use

\frac{\Delta y}{\Delta x}

Multiple Choice

What is the approximate average rate of change in the total calories Leo burned between 40 and 70 minutes?

7.71

8.21

8.33

8.75

Multiple Choice

What was the average rate of change in the number of fish caught per week between weeks 2 and 5?

about 13 fish per week

about 18 fish per week

about 32 fish per week

about 40 fish per week

Multiple Choice

Find the slope of the line.

-5/4

5/4

-4/5

4/5

Multiple Choice

What type of slope is this?

Positive

Negative

Slope of Zero

Undefined slope

Multiple Choice

Find the slope given the points (2, −7) and (−1, 6).

-13/3

13/3

2/3

Multiple Choice

Find the slope given the points (-5,-3) and (2,4).

5/4

1/7

-1

Multiple Choice

What is the formula for a direct variation equation?

y=mx+b

y=kx

m=\frac{y_2\ -\ y_1}{x_2\ -\ x_x}

Direct variation has no equation.

Multiple Choice

What ordered pair does a direct variation always go through when graphed?

(2,2)

(0,0)

(-1,-1)

(1,1)

Fill in the Blanks

In a direct variation equation, the k represents the

Type answer...

Multiple Choice

Which of the following formulas represents the standard form of an equation?

y = kx

y = mx + b

Ax + By = C

Poll

Is this equation in standard form?

4x - 3y = 12

YES

Poll

Is the following equation in Standard form?

-3y = 15

YES

Multiple Choice

The following equation is written in slope intercept form. How is it written in Standard Form?

y = 3x -8

y = 3x + 8

3x + y = -8

3x - y = 8

-3x + y = -8

Multiple Choice

What is the most common reason to use an equation in Standard Form?

It graphs a straight line

The equation is balanced already and easier to graph

The slope is easier to use in graphing

The intercepts can be found and graphed

Review of Rate of change, Slope Introduction, Standard form

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