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The points (–5, 4) and (9, –2) are on a line. Find the intercepts to the nearest tenth.

1 Answer

1 vote

Answer:

The y-intercept = (0, 13/7).

The x-intercept = (13/3, 0).

To the nearest tenth they are

y-intercept (0, 1.9)

x-intercept (4.3, 0)

Explanation:

First find the equation oif the line joining these points:

Slope of line = (4 - (-2)) / (-5-9))

= 6/-14

= -3/7

y - y1 = m(x - x1)

Using m = -3.7 and (x1, y1) = (-5, 4)

y - 4 = -3/7(x - (-5)

y = -3/7x -15/7 + 4

y = -3/7x + 13/7 is the equation of the line.

The y-intercept (when x = 0)

= 0 + 13/7

= (0, 13/7)

The x-intercept:

0 = -3/7x + 13/7

x = -13/7 / -3/7

= 13/3.

x intercept is (13/3, 0)

User RajibTheKing
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