(x,y)
if x repeats with a differnt y then it is not a function
A. none of them repeat, it's a function
B. none of them repeat, it's a function
both of them are functions
Answer:
-5x + 8y = -21
3x - 4y = 15
8y = 5x - 21
y = 5/8x - 21/8
3x - 4y = 15
-4y = -3x + 15
y = 3/4x - 15/4
5/8x - 21/8 = 3/4x - 15/4
-1/8x = -9/8x
x = 9
3x - 4y = 15
3(9) - 4y = 15
27 - 4y = 15
-4y = -12
y = 3
(9, 3)
Answer:
I think the second one, the one you already put
Step-by-step explanation:
Form of direct variation looks like y = kx, where k is any constant number (2, 3/4, 1/3, etc)
So here you have xy = 5.
Divide both sides by x, and you have y = 5/x.
So it is not direct variable, it is inverse variation.
Answer:
4. 3
The answer is the last option, all you do is reduce
Step-by-step explanation:
rise over run = rise/run = 6/2
reduce,
6/2
3/1
3x
