Which set of ordered pairs represent a function? O A {(1,0), (2,1), (2,3)} O B{(1,3), (1,4), (1,5)} O C{(1,5), (2,5), (3,5)} O D
mestny [16]
Answer:
C
Step-by-step explanation:
C is the only answer that doesnt share x-values
Well the 10,000 digit will be 1 and the thousand digit = 7 + 1 = 8
so the first 2 digits are 18
6 fewer than 8 = 2 so we get 182
1 fewer 10 than 1000's is 8-1 = 7 so we have 1827
and 5 fewer ones than 1000.s = 8 - 5 = 3
So our number is 18,273
Answer:
y = x+7
Step-by-step explanation:
Assuming all of these numbers are ordered pairs (coordinates) when x is 1 y is 8, when x is 2 y is 9 and so on. If you notice y is going up by 1 every time so it follows that the starting point (y intercept) must be 7. Therefore, our equation will be y = x + 7.
Test it out:
Let x =2
y = 2 + 7 = 9 This matches our coordinate (2,9) so it's correct.
Let x =4
y = 4 + 7 = 11 This matches our coordinate (4,11) so it's correct.
Feel free to try out the rest of the coordinates, but usually 2 is enough to confirm that your equation is correct.
