Question

What is the slope of the line through (-1, 8) and (3, -4)? A. -1/3. B. -3. C. 1/3. D. 3.

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Answer 1

B. -3

Explanation:

Slope = rise/run or (y2 - y1) / (x2 - x1)

Points (-1,8) (3, -4)

We see the y decrease by 12 and the x increase by 4, so the slope is

m = -12/4 = -3

So, the answer is B. -3

Answer 2

The slope is:

⇨ -3

Work/explanation:

We will use the slope formula to find the slope.

The formula is

`\bf{m=(y_2-y_1)/(x_2-x_1)}`

Where m is the slope.

Plug in the data:

`\bf{m=(-4-8)/(3-(-1))}`

Simplify.

`\bf{m=(-12)/(3+1)}`

`\bf{m=(-12)/(4)}`

`\bf{m=-3}`

Hence, -3 is the slope.