Suppose a system of two linear equations has one solution. what must be true about the graphs of the two equations?

a. they intersect at one point.
b. they intersect at two points.
c. they have the same slope.
d. they have the same y-intercept.

The answer is NOT C.The correct answer is A.They intersect at one point.

It is A

Step-by-step explanation:

Took the quiz

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870