Grade 8 Envision Mini Test 2 Review | Baamboozle - Baamboozle

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Grade 8 Envision Mini Test 2 Review

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How can we write a proportional relationship and what point must it always pass through?

y=kx, (0,0)

What does slope tell us?

The steepness of the line

How do we find slope?

rise/run (y2-y1)/(x2-x1)

What is a word beginning with R that describes comparing two things with division?

RATIO

Give me 3 different names for k or m.

slope, gradient, constant of proportionality, unit rate

Find the slope. Look at the units carefully!

125

What are the slope and y intercepts of this equation. y=5x-10

slope is 5, y-intercept is -10

Find the slope of the line that goes through the points (0,0) and (5,10). Then tell me one fact about this line.

10/5=2. It's increasing, its proportional

How do you find the y-intercept?

make x=0

What can the y-intercept tell us about a situation? What do you need to understand to do this?

it can tell us about the beginning or start of a model. We must understand the untis

A ramp for cars to enter a boat is 15m long and 5 meters high. What is the slope?

5/15=1/3

The y-axis is measuring distance to your destination and the x-axis is measuring time. What does the y-intercept tell us ?

The distance you have to travel at the start or beginning of the model.

What is the slope and y intercept of this line?

slope is 2, y-intercept is zero

What is the slope of this line?

1/2

What is the equation of the line?

y=10x+5

I am running at 8m/s. How long will it take me to run 100m?

12.5 seconds (I wish I was that fast!)