Topic 8 Review

Quiz by Ms. Ball

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- Q1
What is the parent function of a quadratic?

$y=x^2+x+1$

$y=x$

$y=x^2$

$y=mx+b$

30s - Q2
Where is the vertex on the quadratic parent function?

x = 0

(1,1)

y = 0

(0,0)

30s - Q330s
- Q4
Write the equation, in vertex form of a quadratic that has been reflected over the x-axis, translated left one and up two.

$y=\backslash left(-x+1\backslash right)^2+2$

$y=-\backslash left(x+1\backslash right)^2+2$

$y=\backslash left(x+2\backslash right)^2-1$

$y=-\backslash left(x-1\backslash right)^2+2$

45s - Q545s
- Q6
Write an equation for the pictured graph:

$y=\backslash left(x-3\backslash right)^2+2$

$y=-\backslash left(x+3\backslash right)^2+2$

$y=-\backslash left(x-3\backslash right)^2+2$

$y=\backslash left(-x-3\backslash right)^2+2$

60s - Q7
What is the axis of symmetry on the pictured graph?

x = 3

3

y = 3

45s - Q8120s
- Q960s
- Q10
Over what interval is f(x) decreasing?

$x\backslash epsilon\backslash left(-\backslash infty,2\backslash right]$

$x\backslash epsilon\backslash left[2,\backslash infty\backslash right)$

$x\backslash epsilon\backslash left(-\backslash infty,2\backslash right)$

$x\backslash epsilon\backslash left(2,\backslash infty\backslash right)$

45s - Q11
What is the domain of f(x)?

$x\backslash epsilon\backslash left[2,\backslash infty\backslash right)$

$x\backslash epsilon\backslash left(-\backslash infty,\backslash infty\backslash right)$

$f\backslash left(x\backslash right)\backslash epsilon\backslash left[2,\backslash infty\backslash right)$

$f\backslash left(x\backslash right)\backslash epsilon\backslash left(-\backslash infty,\backslash infty\backslash right)$

30s - Q12
An a value that is between 0 and 1 does what to the graph of a quadratic?

Widens it

Reflects it over the x-axis

Narrows it

30s - Q13
Based on the shape of the graph, which value of a makes the most sense?

2

6

1/4

1/2

30s - Q14
What is the standard form of a quadratic?

$Ax+By=C$

$y=ax^2+bx+c$

$y=a\backslash left(x-h\backslash right)^2+k$

30s - Q15120s