3x = 4y
X+y = 21
Multiply second equation by 3
3x+3y= 63
Substitute 3x with 4y
4y + y = 21
5y = 21
Y=4.2
X + 4.2 = 21
x= 16.8
Answer:
B
Step-by-step explanation:
A constant rate of change refers to a pattern/slope that is unchanging. On a graph, these rate of changes are usually represented by a straight line, and B is the only graph in the question with such a line.
If you would like to know what is
the standard form of the equation 2/3 * x + y = 4:
2/3 * x + y = 4 is already in the standard form.
The correct result would be 2/3 * x + y = 4.
.5 despite that .485 is longer .5 is larger
<h2>
Answer:</h2>
4 + 12u
<h2>
Step-by-step explanation:</h2>
4 (1 + 3u)
(4 * 1) + (4 * 3u)
4 + 12u
If I helped, please mark me the Brainliest!?!