the x intercept is where the line crosses the x axis or where y=0
so set y=0 and solve for x
0=-2x-1
solve for x
add 2x to both sides
2x=-1
divide by 2
x=-1/2
the x intercept is at x=-1/2, the point is (-1/2,0)
Answer:
it might be 13 because 12×13 is 156 if you do 12 times any of the other numbers its over 159 or under. hope this helps:)
1) the probability of drawing a white marble is 1 out of 9. purple is 8out of 9
2) the probability of drawing two white marbles is 2out of 9
3) two purple because every time you draw if you put it back in the probability doesn't change