8th Grade Functions Question Preview (ID: 39824)


Intro To Functions. TEACHERS: click here for quick copy question ID numbers.

What is true about the X value in functions?
a) It repeats
b) It doubles
c) It never repeats
d) It switches with the y value

What do you use on a graph to confirm if an equation is a function?
a) Connected points
b) Single points
c) Horizontal Line Test
d) Vertical Line Test

Which of the following is not a way to confirm if an equation is a function?
a) Looking at the equation
b) Mapping
c) Set of Coordinates
d) Table of Values

Which part of the equation can repeat in a function?
a) The X Values
b) The Y Values
c) The slope
d) The y-intercept

In the equation y=mx+b, identify the y-intercept variable.
a) y
b) x
c) b
d) m

In the equation y=-3x+6, identify the slope.
a) y
b) 6
c) -3
d) x

The function f(x)=6x-4 is what type of function?
a) Linear
b) Nonlinear
c) Cubic
d) Quadratic

Which type of math can a linear function not have?
a) addition
b) square root
c) fraction
d) multiplication

f(x)=-3x-8 and g(x)=-3x-4...which description is true?
a) They both have the same slope but f(x) is above g(x)
b) They have different slopes and different the same y-intercept
c) They intersect at right angles
d) They both have the same slope but g(x) is above f(x)

Identify the slope and the y-intercept in f(x)=2x-8
a) Slope = 2, Y-intercept = 8
b) Slope = 2, Y-intercept = -8
c) Slope = -8, Y-Intercept = 2
d) Slope = 8, Y-Intercept = 2

Identify the slope and y-intercept of f(x)= (1/3)x-6
a) m= (1/3), b = 6
b) m = -6, b = (1/3)
c) m = (1/3), b = -6
d) m = 6, b = (1/3)

Which of the following is a linear equation?
a) y = x^2 + 4
b) y = x^4 - 8
c) y = -3x+4
d) y = x(x) + 6

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