A total of 321 adults and children are at a movie theater. There are 216 more adults than children in the
theater. If a represents the number of adults and b
represents the number of children, which system of
equations could be used to find the number of adults
and the number of children in the theatre?
O a+b = 321
a= 216b
O a+b=321
b= 2160
a + b = 321
a = b + 216
D a + b = 321
b= a + 216

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

jml angle lkj & angle mj = lm

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this