asked 234k views
3 votes
PLEASE HELP ME!!! WORTH 10 POINTS!!!

Write the equation of the line, in point-slope form. Identify (x1, y1) as the point (1, 2). Use the box provided or the upload option to submit all of your calculations and final answer.

PLEASE HELP ME!!! WORTH 10 POINTS!!! Write the equation of the line, in point-slope-example-1
asked
User Eboney
by
8.6k points

2 Answers

7 votes
First, solve for slope.
Formula for slope:
(y2-y1)/(x2-x1)
Plug in values:
(-2-2)/(-1-1) = - (4)/(2) = 2
Slope:
2
Second, we must plug into point-slope form.
Formula for point-slope:
y-y1=m(x-x1)
Plug in the values:
y-2=2(x-1)

And there you have your answer in point-slope form
answered
User Ladie
by
7.9k points
2 votes
Point-slope formula : y - y₁ = m(x - x₁) ; passes through (1, 2)

We first need to find the slope.

Slope formula : m = y₂-y₁ / x₂-x₁

The graph gives us 2 points : (1, 2) & (-1, -2)

Simply plug everything in! :)

m = -2 - 2 / -1 -1

Simplify.

m = -4/-2

Simplify.

m = 2

So, our slope is 2.

Now that we have the slope as well as a plot, we can plug this into the point-slope formula.

Remember : y - y₁ = m(x - x₁) is the point-slope formula.

m = 2 ; Passes through (1, 2)

Plug everything in :)

y - 2 = 2(x - 1)

~hope I helped!~
answered
User AdamSchuld
by
8.2k points
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