# Applied Mathematics: Finding x,y-intercepts and vertex of a quadratic function (Homework 3)

## Applied Mathematics: Finding x,y-intercepts and vertex of a quadratic function (Homework 3)

### Question 1

Suppose $y=3{ x }^{ 2 }+42x-150$. In each part below, if there is more than one correct answer, enter your answers as a comma separated list. If there are no correct answers, enter NONE.

• Find the vertex: (-7, -279)
• Find the y-intercepts: (0,-150)
• Find the x-intercepts: (-16.95, 0), (2.95, 0)

### Question 2

Given the function $y=3{ x }^{ 2 }+42x−150$. In each part below, if there is more than one correct answer, enter your answers as a comma separated list. If there are no correct answers, enter NONE.

• Find the vertex: (4.5, 36.75)
• Find the y-intercepts:  (0, -24)
• Find the x-intercepts: (1,0), (8,0)

Question 3

$y={ x }^{ 2 }-25$

• Find the vertex: (0, -25)
• Find the y-intercepts: (0, -25)
• Find the x-intercepts: (-5, 0), (0, 25)