The answer is A. You can get that in by plugging in and checking or by substitution. In order to use substitution here, you would plug in 3x + 3 into y in the first equation. You would then distribute the 2 and solve for x, which would give you 0. Then you could plug that into either equation to find that y = 3.
Answer:
C III
Step-by-step explanation:
The rate of change of a linear function is the slope.
f(x) = mx + b is the equation of a linear function whose graph is a straight line. m is the slope.
I f(x) = 4x - 3; m = slope = 4
II f(x) = 1/2 x + 5; m = slope = 1/2
III We can use two points to find the slope.
Let's use points (1, 6) and (2, 12).
m = slope = (y2 - y1)/(x2 x1) = (12 - 6)/(2 - 1) = 6/1 = 6
The three slopes are 4, 1/2, 6.
The greatest rate of change is 6, so the answer is C III.
Answer:
Step-by-step explanation:
it -2
Percent means parts out of 100
x%=x/100
find change
10 to 60=50 (60-10=50)
percent change=change/originla
original=10
change=50
50/10=x%
5/1=x/100
multiply both sides by 100
500=x
answer is 500%
Answer:
x= 8 feet (answer : A)
Step-by-step explanation:
hello :
the perimeter is : P= 2(x+y) y : the length x : the width
P=40 and y = 12 calculate : x
2(x+12) =40
divid by 2 : x+12 =20
x=20-12
x= 8 feet
