Another way to identify the domain and range of functions is by using graphs. Because the domain refers to the set of possible input values, the domain of a graph consists of all the input values shown on the x-axis. The range is the set of possible output values, which are shown on the y-axis.
Explanation:
You want to first to substitute to form 3 equations.
5=4a+2b+c
12=9a+3b+c
-4=a-b+c
Now solve with whatever way you fell comfortable, I'm going to use elimination.
First eliminate c
7=5a+b
16=8a+4b --> 4=2a+b
Then I'll eliminate b,
3=3a
a=1
Now solve for b and c
7=5+b
b=2
1-2+c=-4
c=-3
Now for the equation:
y=x^2+2b-3
Hope this helps!
The max of Lauren's age --> the minimum of the others' ages, 1, 2 & 3
4*avg = 4*9 = 36
36 - (1+2+3) = 30
Lauren is 30 yrs of age, or younger.
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</span></span>f-1(x) = sqrt(25-x) is the answer
Answer:
x=3, y=1. (3, 1).
Step-by-step explanation:
x+3y=6
2x-7y=-1
------------
x=6-3y
2(6-3y)-7y=-1
12-6y-7y=-1
12-13y=-1
13y=12-(-1)
13y=12+1
13y=13
y=13/13
y=1
x+3(1)=6
x+3=6
x=6-3
x=3