PLEASE ANSWER NUMBER 17
1 answer:
You might be interested in
The intercepts are the points where the graph crosses the x or y-axis
- <em>The x-intercepts changed from 0 to </em>
<em>.</em>
- <em>The y-intercepts changed from 0 to 3</em>
The functions are given as:
<u>Function f(x)</u>
The x-intercept is calculated as follows:
Set f(x) to 0
Solve for x
The y-intercept is calculated as follows:
Set x to 0
Hence, the intercepts are 0
<u>Function g(x)</u>
The x-intercept is calculated as follows:
Set g(x) to 0
Solve for x
The y-intercept is calculated as follows:
Set x to 0
The x-intercepts are , while the y-intercept is -3
By comparing the intercepts of f(x) and g(x),
- <em>The x-intercepts changed from 0 to </em>
- <em>The y-intercepts changed from 0 to 3</em>
Read more about intercepts at:
Answers:
Equation is
Center is (-1, -2)
Radius = 5
===========================================
Work Shown:
center = (h,k) = (-1,-2)
radius = 5
-----------------------------
Explanation:
I grouped up the x and y terms separately. Then I added 1 to both sides to complete the square for the x terms. I cut the 2 from 2x in half, then squared it to get 1. In the next step, I cut the 4 from 4y in half to get 2, which squares to 4. So that's why I added 4 to both sides to complete the square for the y terms.
Each piece is factored using the perfect squares factoring rule which is a^2+2ab+b^2 = (a+b)^2
The last equation is in the form (x-h)^2 + (y-k)^2 = r^2
We can think of x+1 as x - (-1) to show that h = -1
Similarly, y+2 = y-(-2) = y-k to show that k = -2
The center is (h,k) = (-1,-2)
The radius is r = 5 because r^2 = 5^2 = 25 is on the right hand side in the last equation above.