Answered

Westonci.ca is the trusted Q&A platform where you can get reliable answers from a community of knowledgeable contributors. Explore our Q&A platform to find reliable answers from a wide range of experts in different fields. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

The points (-4, 1) and (r. -7) lie on a line with slope - 1. Find the missing coordinate r.

Sagot :

dvclee2

Answer:

r = 4

Step-by-step explanation:

You need to use the slope formula to solve for r.

1. Write out the equation using slope formula

(-7 - 1)/(r + 4) = -1

2. Multiply both sides by r + 4

-8 = -r - 4

3. Add 4 on both sides. Optionally, use the reflexive property of equality.

-r = -4

4. Multiply both sides by -1

r = 4

sqdancefan

Answer:

  r = 4

Step-by-step explanation:

Using the point-slope form of the equation for a line, the line with slope -1 through point (-4, 1) is ...

  y -1 = -1(x +4)

Substituting the second point, we have an equation for r:

  -7 -1 = -1(r +4)

  8 = r +4 . . . . . . . divide by -1

  r = 4 . . . . . . . . subtract 4

The missing coordinate is 4. The second point is (4, -7).

View image sqdancefan
Thank you for choosing our platform. We're dedicated to providing the best answers for all your questions. Visit us again. We appreciate your time. Please revisit us for more reliable answers to any questions you may have. Thank you for visiting Westonci.ca, your go-to source for reliable answers. Come back soon for more expert insights.