Identify the conic section represented by the image
A. Circles
B. Ellipse
C. Hyperbola
D. Parabola
this is an ellipse
Answer:

Step-by-step explanation:


We are going to do a replacement of x for a second equation
So instead

in the place of x we are putting 12-y from the first equation, so

To leave the brackets we need to do multiplication

Which is


How to determine x? From the first equation:
If the x +y = 12 then the x = 12-y so x = 12-7 = 5
We should write solution as a pair:

Step-by-step explanation:
(5.2+3.1)+7.4=5.2+(3.1+7.4)
(8.3)+7.4=5.2+(10.5)
15.7=15.7
hence,L.H.S =R.H.S PROVED
Answer: -3
Explanation:
This equation is called slope-intercept form the line you put in has the slope and y-intercept in it, whatever number is in front of x is the slope, this equations slope is -3.