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Elementary Algebra and Functions Videos 36 videos

TSI Math: Writing the Slope-Intercept Equation of a Graphed Line
97 Views

What is the equation of the line graphed above?

TSI Math: Plugging in Slope and Point to Find the Equation of a Line
12 Views

A line passes through the point (-4, -4) and has a slope of . What is its equation?

TSI Math: Using Intercepts to Find the Slope of a Line
5 Views

Line A has an x-intercept of -4 and a y-intercept of 8. What is its slope?

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TSI Math: Knowing the Orientation of Positive and Negative Slopes on a Graph 8 Views


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Description:

The graph of which of the following equations is a line that has a y-intercept below zero and decreases as you move from left to right?


Transcript

00:03

All right tessa Mash members Here we go Another question

00:06

thrown at your head like a curveball from a baseball

00:08

diamond The graph of which the following equations is a

00:10

line that has a why intercept below zero and decreases

00:15

as you move from left to right So why intercept

00:22

below zero What does that mean It's going to intersect

00:25

or intercept the y axis This vertical thing below zero

00:29

so somewhere down here and it's going to decrease from

00:32

left to right i mean it's a negative slope so

00:35

we can already just looking at this get rid of

00:37

cnd because those have positive slopes right You got two

00:40

thirds that's positive and five x there that's positive So

00:43

we've narrowed down our things here real quick We love

00:46

slope it's our thing increase decrease Fight fight fight That's

00:49

The cheerleaders had shmoop high just outside of dallas and

00:52

they're not very inspiring football or basketball games but they're

00:55

awesome supporters of the mathletes in the math club welcome

00:58

to shmoop if a graph decreases as we move left

01:01

to right across the coordinate play me why values become

01:04

smaller is the x values become larger that's the definition

01:07

of a negative slope we say slope you say intercepts

01:11

low intercept slope intercept the cheerleaders sure know their playbook

01:15

in the general slope intercept form y equals mx plus

01:18

b m represents thus slow conveniently all the answer choices

01:21

Aeryn this form so we can see that on ly

01:23

the equations why equals negative two x minus a a

01:26

and y equals negative three force acts be both have

01:29

negative slopes right So the correct line should have a

01:32

why intercept below zero That doesn't mean it's freezing It

01:35

means the line crosses the y axis at a negative

01:38

value somewhere down here on this little pretty graph in

01:41

the slope intercept equation y equals mx plus b the

01:44

b is the y intercept for the line to intercept

01:47

the access below Zero b must be negative right So

01:50

so you got the negative eight there in that matches 00:01:53.419 --> [endTime] so that's it that's the answer It's a

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