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OpenStudy (anonymous):
OpenStudy (anonymous):
OpenStudy (kirbykirby):
Observe that the equation of the line, in general, is y = mx+b
and m is the slope, and b is the y-intercept (The point on the graph where the line crosses the y-axis).
If the slope is negative, the line will look like this: \
If the slope if positive, the line will look like this: /
Also, to determine how the graph shifts up and down... look at the y-intercept of the graph of both lines and see how many units they changed.
OpenStudy (kirbykirby):
So you have a function y = -3x - 5
The " -5 " is the y intercept, but it also represents the shift of the parent function y = -3x
OpenStudy (anonymous):
Are we looking for the graph of y= -3x-5 ?
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OpenStudy (kirbykirby):
yes.
OpenStudy (anonymous):
That graph looks like this \ ,
therefore options "C" and "D" are Eliminated , since they're like / !
Options "A" and "B" remain since they look like this : \
OpenStudy (kirbykirby):
yes
OpenStudy (anonymous):
it's B!
OpenStudy (kirbykirby):
bingo :)
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OpenStudy (anonymous):
yay! Do you mind checking some problems for me?
OpenStudy (kirbykirby):
oh dear I wish I could, but I actually have to leave my house in a few mins, sorry :(