? QUESTION The points (3, r) and (7, -4) lie on a line with slope 4. Find the missing coordinate r.

asked Apr 5, 2021 25.2k views

3 votes

? QUESTION

The points (3, r) and (7, -4) lie on a line with slope 4. Find the missing coordinate r.

by Druss

4.9k points

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4 votes

Answer:

-20

Explanation:

y = 4x + b

-4 = 4(7) + b

-32 = b

y = 4x -32

r = 4(3) - 32

r = -20

Dafen answered Apr 10, 2021

by Dafen

3.7k points

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