ACT Aspire Math: Using Intercepts to Find the Slope of a Parallel Line
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A line has an x-intercept of -2 and a y-intercept of -4.
What would be the slope of a parallel line?
ACT Aspire | Math |
ACT Aspire Math | Functions |
Math | Functions |
Product Type | ACT Aspire |
Test Prep | ACT Aspire ACT Aspire Math |
Transcript
a parallel universe there's a website called shin up Unfortunately
we'll never find out because well one thing being parallel
to another means that those two things we'll never meet
so heavy sigh We'd really like to know what's going
on It's new up headquarters Well we could imagine that
at least in the shin uppers minds over there well
they're basically doing the same thing as we are only
with one less hump in there in sadly for them
this makes all the difference for using slope intercept form
correctly Parallel lines likewise basically do the same thing They
have the same slope so their rise over run is
the same All we need to do then to solve
the problem is find the slope of the first line
right And then it's the same Second of course there's
minor detail actually finding that flow But what we got
you covered problem tells us that the line has an
x intercept of negative too which means that when y
zero the line is crossing the x axis that negative
too right there In other words we've been given one
of the points of the line negative to zero But
wait there's more The y intercept is negative For which
means that when x is zero the line is crossing
or intercepting the y axis at negative for well we've
got yet another point here is he wrote negative for
and with two points in our bag we can calculate
the slope using the fancy formula thing here Why two
months Why one over x to have money Sex one
Remember that thing So we got negative four minus zero
And then we have zero minus negative too which is
same as negative for over two Or just negative too
So the new line must have a slope of negative
too because that would be parallel to our line You
know in the land of shmoop is supposed to show
up You know what a copycat All right That's it