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8th Grade MATH VOCABULARY #2

Total questions: 20

Worksheet time: 20mins

Name
Class
Date
1.
If the scale factor is more than one, what happens to the figure?
a)
gets bigger
b)
gets smaller
c)
stays the same
d)
flips over
2.
Direct Variation
a)
proportional
b)
square root
c)
divide y over x
d)
graph tab Control T
3.
Dilation
a)
rise over run
b)
change in size
c)
flipped across y-axis
d)
whole numbers
4.
Enlarging or reducing a figure is a ...
a)
Reflection
b)
Dilation
c)
Rotation
d)
Translation
5.
What is the definition of a function?
a)
Has inputs and outputs
b)
Every input has only ONE output
c)
Inputs have different outputs every time
d)
x-values and y-values
6.
Scale Factor
a)
Multiply
b)
Add
c)
Subtract
d)
Divide
7.
Does the graph show a proportional relationship?
a)
Yes
b)
No
8.

Equation and slope of a horizontal (flat) line is when

y=a number (where it crosses the ___-axis) and the slope is _____

a)

x axis, 0

b)

y axis, 0

c)

1/2

d)

zero

9.

Equation and slope of a vertical (up/down) line is when x=a number (where it crosses the ___-axis) and the slope is __________.

a)

x, undefined

b)

equation, undefined

c)

y, undefined

10.

The equation for slope-intercept form is y=mx + b, where m= ______(constant rate) and b=_______

a)

slope, x-intercept

b)

rate

c)

equation

d)

slope, y-intercept

11.

The y intercept is the point where line crosses _____-axis (put in zero for x): (0,b)

a)

y

b)

x

c)

slope

d)

rate

12.

The x intercept is the point where line crosses _____-axis (put in zero for x): (0,b)

a)

y

b)

x

c)

equation

d)

slope

13.

What are possible slopes of a graph?

a)

only positive and negative

b)

positive, negative, undefined, and zero

c)

only undefined and zero

d)

zero

14.

The slope formula (to find slope) is:

a)

Rise / Run

m = (y2 - y1) / (x2 - x1)

b)

y axis

c)

x axis

d)

slope-intercept

15.

What are the parts of a graph/coordinate plane?

a)

only the x-axis and y-axis

b)

only the quadrants

c)

an equation

d)

X-axis

Y-axis

Quadrants 1,2,3,4

16.

If the scale factor is 1/2 what happens to an image?

a)

Nothing

b)

It gets larger

c)

It flips

d)

It decreases in size.

17.

The hypotenuse of a right triangle is always

a)

larger than the legs

b)

the same as the legs

c)

smaller than the legs

d)

has no relationship with the legs

18.

Which variable in y=mx+b, represents the "rate"?

a)

m

b)

b

c)

x

d)

y

19.

In y=mx+b, what is the y-intercept?

a)

m

b)

b

c)

x

d)

y

20.
If the scale factor is less than one, the new figure will be
a)
an enlargement
b)
a reduction
c)
a scale factor
d)
bigger