So we can start with the full of possibilities and eliminate them one by one.
The full set is {0,1,2,3,4,5,6,7,8,9}.
Now we know that any prime greater than 2 is odd as otherwise it would have 2 as a factor, so we can eliminate all of these digits that would be an even number, leaving:
{1,3,5,7,9}
We also know that any prime greater than 5 cannot be a multiple of 5 and that all numbers with 5 in the digits are a multiple of 5, so we can eliminate 5.
{1,3,7,9}
We know that 11,13,17 and 19 are all primes, so we cannot eliminate any more of these, leaving the set:
{1,3,7,9} as our answer.
Answer:
y=2x-1
Step-by-step explanation:
Slope intercept form is y=mx+b.
To start, we know that the y-intercept, b, is -1 because we can see where the line crosses the y-axis. Next, we can calculate the slope by counting how many steps up/down and to the side the line goes when looking at points it crosses through.
We know that this line crosses through (0, -1) and (1,1) so we would count "up 2 over 1"
2/1
2
m=2
Now we can write our equation.
y=2x-1
HTH :)
Answer:
Three times the sum of x and seven plus ten
Step-by-step explanation:
Just did this test