Vocabulary Quiz 5

Mathematical Equivalence

ON

Which of the following is a quadratic function?

• 
• 
• 
• 

Answer explanation

When graphed, a quadratic function is a u-shape and it is called a parabola.

• quadratic
• linear
• exponential

Answer explanation

The highest power of the function given is a 2, therefore, it is a quadratic function.

Match the following

• no real solutions

• 
• one solution

• 
• two solutions

• 

Answer explanation

One solution= one x-intercept

two solutions- two x-intercepts

No real solutions= no x-intercepts

• linear
• exponential
• quadratic

Answer explanation

The highest power of the function given is a 1, therefore, it is a linear function.

This is the graph of an exponential ​ (a)   function and the initial value is ​ (b)  

• decay
• 2
• growth
• 10
• 1

Answer explanation

The graph is decreasing from left to right, therefore this is exponential decay.

The initial value is the same as the y-intercept, therefore the answer is two.

What is the rate of change of the following 12x - 6y = 30

• 2

• -2

• 12

• -12

• add 2x to both sides
• add 4y to both sides
• subtract 2x from both sides
• divide by -4

Answer explanation

When solving for y, add or subtract the term that contains x first.

Therefore, the first step is to add 2x to both sides of the equation.

Labels the parts of the parabola

e

d

c

b

minimum

axis of symmetry

zeros

y-intercept

maximum

Answer explanation