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Mathematics 8 Online
OpenStudy (anonymous):

What type of line is the graph of 4x + y = −3? (1 point) Vertical Horizontal Rising Falling

OpenStudy (blackstreet23):

y = -4x-3

OpenStudy (blackstreet23):

finding its slope we get that the slope is. 4

OpenStudy (blackstreet23):

finding the slope it is -4

OpenStudy (blackstreet23):

therefore it is decreasing or falling

OpenStudy (anonymous):

Yes, but I tried to do the question but the line on the graph came out weird

OpenStudy (blackstreet23):

or you can also graph it

OpenStudy (anonymous):

but i dont understand

OpenStudy (blackstreet23):

umm do you know what is a derivative?

OpenStudy (anonymous):

yes

OpenStudy (blackstreet23):

the derivative is the same as the slope

OpenStudy (blackstreet23):

if you want to check if the graph is increasing or decreasing. you do the derivative

OpenStudy (blackstreet23):

if the derivative is greater than zero the graph is increasing

OpenStudy (blackstreet23):

and if is less than 0 the graph is deacreasing

OpenStudy (anonymous):

Thanks! I get it now. Just took a moment to understand

OpenStudy (blackstreet23):

https://www.desmos.com/calculator

OpenStudy (blackstreet23):

you can also graph it here and check it

OpenStudy (blackstreet23):

you always see the graph from left to right

OpenStudy (blackstreet23):

so that way you can see if it is increasing or decreasing

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