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Please help me........

Please help me........-example-1

2 Answers

5 votes

Answer:

y = 15x + 45 *

y - 165 = 15 (x - 8) *

*Both are the same*

Explanation:

1. Find the slope of the line

using the coordinates of x and y - (3/70); (5,100)

take the coordinates to find the slope

5-3 = 2 and 100-70 = 30

rise over run - y over x = 30/2

simplify: 15/1 = 15x

2. Solve for the second equation

use the coordinate (8,165)

Because we only have one point we use point-slope form

y - y*1 = m (x - x*1): *subscript*

plugin using (8,165): y - 165 = 15 (x - 8)

For extra convenience, I added slope-intercept form: y = 15x + 45

Final answer:

y- 165 = 15 (x - 8)

y = 15x + 45

Please help me........-example-1
User Ronald Luc
by
8.6k points
5 votes

Answer:

y-165=1/15(x-8)

Explanation:

Step 1:
First, you'd find the slope from the graph. Since the line you're supposed to find an equation for is parallel to the given line, the slope is the same. I used y2-y1/x2-x1 to find the slope, using (5,100) as x2 and y2, and (3,70) for x1 and y1.

Step 2:

Second, you form a point-slope equation because they give you a point to use in the problem. The problem gives you point (8,165), so you use that in the point slope equation (which is y-y1=m(x-x1)) to replace y1 and x1. Use the slope to replace variable m.

After all of that, you should get y-165=1/15(x-8).

User Kevin Kouketsu
by
8.3k points

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