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IIIMATHEMATICAL READINESSX-and y-intercepts of a line given the equation in standard formFind both the x-intercept and the y-intercept of the line given by this equation.8.9x-5.3y-9.1 = 0Round your answers to two decimal places.X Х?x-intercept: 0y-intercept: |

User Greg Najda
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1 Answer

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You have the following equation:

8.9x-5.3y-9.1 = 0 (1)

The general form of a line equation is given by:

y = mx + b (2)

where m is the slope and b is the y-intercep of the line.

In order to find the x-intercept and y-intercept, you first write the equation (1) in the same form of the equation (2). Then, you solve for y in the equation (1), just as follow:

8.9x-5.3y-9.1 = 0

-5.3y = -8.9x + 9.1

y = (-8.9x + 9.1)/(-5.3) = 1.67x - 1.71

Then, the line equation is:

y = 1.67x - 1.71

If you compare the previous equation with the equation (2) you have that b=-1.71

y-intercept = -1.71

To obtain the x-intercept, you make y=0 and solve the for x, as follow:

0 = 1.67x - 1.71

1.67x = 1.71

x = 1.71/1.67 = 1.02

Then, the x-intercept is x = 1.02

User Ginda
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