This module provides an overview of Linear Regression and Correlation: Slope and Y-Intercept of a Linear Equation as a part of Collaborative Statistics collection (col10522) by Barbara Illowsky and Susan Dean.

For the linear equation
$y=a+\mathrm{bx}$ ,
$b$ = slope and
$a$ = y-intercept.

From algebra recall that the slope is a number that describes the steepness of a line and
the y-intercept is the y coordinate of the point
$(0,a)$ where the line crosses the y-axis.

Svetlana tutors to make extra money for college. For each tutoring
session, she charges a one time fee of $25 plus $15 per hour of tutoring.A linear equation that expresses the total amount of money Svetlana earns for each session
she tutors is
$y=25+\text{15x}$ .

What are the independent and dependent variables?
What is the y-intercept and what is the slope? Interpret them using complete sentences.

The independent variable (x) is the number of hours Svetlana tutors each session. The dependent variable (y) is the amount, in dollars, Svetlana earns for each session.

The y-intercept is 25 (a = 25). At the start of the tutoring session, Svetlana charges a one-time fee of $25 (this is when x = 0).
The slope is 15 (b = 15). For each session, Svetlana earns $15 for each hour she tutors.

Questions & Answers

where we get a research paper on Nano chemistry....?

Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest.
Rafiq

Rafiq

what is differents between GO and RGO?

Mahi

what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.?
How this robot is carried to required site of body cell.?
what will be the carrier material and how can be detected that correct delivery of drug is done
Rafiq

Rafiq

if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION

Anam

analytical skills graphene is prepared to kill any type viruses .

Anam

Any one who tell me about Preparation and application of Nanomaterial for drug Delivery

The nanotechnology is as new science, to scale nanometric

brayan

nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale

Damian

Is there any normative that regulates the use of silver nanoparticles?

Source:
OpenStax, Collaborative statistics (custom lecture version modified by t. short). OpenStax CNX. Jul 15, 2013 Download for free at http://cnx.org/content/col11543/1.1

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