Given the point (5, 6) and the slope of 5, find y when x = 21.

in Algebra 2 Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

Given the point (5, 6) and the slope of 5, find y when x = 21.

The slope of a straight line is given by the ratio of the difference between the y-coords and the difference between the x-coords.

i.e. slope = ( y2 - y1) / (x2 - x1)

The first point is (x1, y1) = (5, 6)

the 2nd point id (x2, y2) = (21, Y)

where Y is the value we seek.

So.

slope = 5 = ( y2 - y1) / (x2 - x1) = (Y - 6) / (21 - 5)

5 = (Y - 6) / 16

80 = Y - 6

Y = 86

by Level 11 User (80.5k points)

Related questions

Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
82,894 questions
87,502 answers
1,965 comments
3,946 users