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3 years ago

Line A has an x-intercept of -4 and a y-intercept of 8. What is its slope?

Mathematics

1 answer:

Tanzania [10]3 years ago

8 0

Answer:

Step-by-step explanation:

We can use the intercept form of the equation of a line, then solve for y.

<u>Intercept form</u>

x/(x-intercept) +y/(y-intercept) = 1

x/-4 +y/8 = 1

Solving for y, we have ...

-2x +y = 8 . . . . multiply by 8

y = 2x +8 . . . . add 2x

The coefficient of x is 2, so the slope is 2.

The graph shows you the rise is 8 for a run of 4, so ...

slope = rise/run = 8/4

slope = 2

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