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OpenStudy (anonymous):
OpenStudy (anonymous):
@jim_thompson5910
jimthompson5910 (jim_thompson5910):
why not plug in each x value into each equation and see what outputs you get
for instance, focus on just choice A
y = |x| + 4
now plug in x = 2
y = |x| + 4
y = |2| + 4
y = 2 + 4
y = 6
we want to get y = 2 since this is in the table but we got y = 6 instead. So choice A is eliminated
jimthompson5910 (jim_thompson5910):
do the same with the other answer choices. Be sure to test all of the x values
OpenStudy (anonymous):
b=8
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OpenStudy (anonymous):
Would the responses for a& b and c&d be the same?
OpenStudy (anonymous):
@jim_thompson5910
jimthompson5910 (jim_thompson5910):
what do you mean by b = 8? Are we on the same problem?
OpenStudy (anonymous):
y = |x| + 4
y = |3| + 4
y = 3 + 4
y = 7
OpenStudy (anonymous):
y = |x| + 4
y = |4| + 4
y = 4 + 4
y = 8
y = |x| + 4
y = |5| + 4
y = 5+ 4
y = 9
y = |x| + 4
y = |10| + 4
y = 10+ 4
y = 10
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OpenStudy (anonymous):
right?
jimthompson5910 (jim_thompson5910):
I don't know why you plugged x = 3 into choice A when we already eliminated it
OpenStudy (anonymous):
I was just doing all of them A is out
jimthompson5910 (jim_thompson5910):
well once you've eliminated an answer choice, you can move onto another one
jimthompson5910 (jim_thompson5910):
hopefully you see how I eliminated choice A?
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OpenStudy (anonymous):
so it not option a?
OpenStudy (anonymous):
it is not option c either?
jimthompson5910 (jim_thompson5910):
nope not C either
OpenStudy (anonymous):
so it is either b or d
OpenStudy (anonymous):
I would go with b
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jimthompson5910 (jim_thompson5910):
test B with one x value in the table
OpenStudy (anonymous):
it is the same answer for a also
jimthompson5910 (jim_thompson5910):
so B is out too
OpenStudy (anonymous):
so it is d
jimthompson5910 (jim_thompson5910):
correct
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OpenStudy (anonymous):
Can you help me with this?
Write the equation that is the translation of y=|x| left 9 units and up 11 units.
y=|x - 11| - 9
y= |x+9| + 11
y= |x - 9| +11
y= |x+11| - 9
@jim_thompson5910
jimthompson5910 (jim_thompson5910):
when you shift 9 units left, you replace x with x+9
shifting 11 units up means you tack a `+11` on the end
OpenStudy (anonymous):
b or c?
jimthompson5910 (jim_thompson5910):
when you shift 9 units left, you replace x with x+9