Precalculus Q1 Week 4 Mid-Week Assignment 3

What is the common difference in this sequence?
{48, 32, 16, 0, ... }

• 1/2
• 2
• -8
• -16

This is an arithmetic sequence. 5, 2, –1, –4, . . .

What is a₇ ?

• -13

• -11

• -18

• -22

What can the roots to a quadratic equation be called?

• zeros

• solutions

• x-intercepts

• none of the choices

Solve

x² + 2x - 20 = 4

• x = -6, x = 4

• x = 6, x = -4

• x = 12, x = -2

• x = 8, x = -3

What form is the following equation written in?
y = 2(x - 2)² + 4

• Standard
• Vertex
• Factored
• Linear

What is the y-intercept of 
f(x)=2x² + 4x + 6

• (6 , 0)
• (-6 , 0)
• (0, -6)
• (0 , 6)

What form is the quadratic equation written in?
y = (x - 2)(x + 4)

• Factored
• Standard
• Vertex
• Descending Polynomial

What can we find easily in standard form?

• vertex
• zeros/x-intercepts
• y-intercept

What can we find easily in factored form?

• y-intercept
• vertex
• zeros/x-intercepts

Which is standard form?

• y = mx + b