A number line going from negative 1 to 0. There are 5 equal spaces between the numbers. The line contains negative 1, A, B, C, D, 0.

Which point on the number line represents −4
5
?

A
B
C
D

1 answer

To find which point on the number line represents \(-\frac{4}{5}\), we first need to determine the spacing between the points.

The number line goes from \(-1\) to \(0\) and has 5 equal spaces. The total length from \(-1\) to \(0\) is \(1\) unit (since \(0 - (-1) = 1\)).

We can divide this length by the number of spaces (5) to find the length of each space:

\[ \text{Length of each space} = \frac{1}{5} = 0.2 \]

Now, let's mark the points starting from \(-1\):

  • The first point (A) is at \(-1 + 0.2 = -0.8\)
  • The second point (B) is at \(-1 + 0.4 = -0.6\)
  • The third point (C) is at \(-1 + 0.6 = -0.4\)
  • The fourth point (D) is at \(-1 + 0.8 = -0.2\)

The points on the number line are:

  • \(-1\)
  • A: \(-0.8\)
  • B: \(-0.6\)
  • C: \(-0.4\)
  • D: \(-0.2\)
  • 0

Now, we want to determine where \(-\frac{4}{5}\) lies on the number line.

Converting \(-\frac{4}{5}\) into a decimal, we have:

\[ -\frac{4}{5} = -0.8 \]

From our markings on the number line, we can see that \(-0.8\) corresponds to point A.

Thus, the point on the number line that represents \(-\frac{4}{5}\) is:

A.