Well, you do a nice job of re-stating the equation in slope-intercept form... however, that is not what is being requested.
The request is that you provide the slope and y-intercept of the line. Clearly, you are set up very nicely to do so. The text book doesn't require this, however I would prefer that you state the y-intercept as an ordered pair, rather than just a real number.
do you only simplify the slope if it's a whole number.....for example 8x/2 = 4x... it that right?.....but if the slope is 9x/2 i should NOT simplify it and keep it like that? just want to make sure.
In the case of y = (4/5)x + 8/5, algebraticians will leave the 8/5 as is, rather than convert to a mixed number. I am glad that you find it easy to convert to a mixed number, but I do not understand how it is easier to do an additional step.
When converting to slope-intercept form, you need to EXTRACT the coefficient from the variable (typically x). Then, simplify the coefficient.
So:
8x/2 would simply to (8/2)x or just 4x.
9x/2 would simplify to (9/2)x.
N.B. I am using parentheses to clearly identify the coefficient as a leading multiplier. If I left it as 9/2x that could mean "9 over 2x" which is a valid algebraic expression, but not what we are working with at this time.
Good questions, Jamie and Charmi... glad you asked!!
They are asking for the SLOPE and the y-INTERCEPT of the line. Since some of the lines are in slope-intercept form, you should be able to identify the SLOPE and y-INTERCEPT fairly easily. In the case where the line is not is slope-intercept form, you should be able to manipulate the equation into slope-intercept form.
Slope-intercept form is "y = mx + b" where m is the slope and b is the y-intercept... often expressed as an ordered pair i.e. (0, b).
they are the crazy mean people who are working with the society of unhappy children with no logic sense.. yup. they are coming to get us. BE AFRAID!!!! HIDE. Personally i would hide in the closet... anyway jamie try re-scaling the graph to fit you needs...
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for number 13 it was
ReplyDeletey=-4+(-8x)so i simplified
y=-4-8x so then i switched -4 and -8x to
y=-8x-4
is this correct?
Well, you do a nice job of re-stating the equation in slope-intercept form... however, that is not what is being requested.
ReplyDeleteThe request is that you provide the slope and y-intercept of the line. Clearly, you are set up very nicely to do so. The text book doesn't require this, however I would prefer that you state the y-intercept as an ordered pair, rather than just a real number.
Ca-peesh?
o ok thanks! but would it be correct?
ReplyDeleteNo. I would expect you to answer the question. That is a skill worth learning.
ReplyDeletefor me it's easier to simplify the intercept (in number 8) it that mathematicly correct? if i simplify y = 4/5x + 8/5 to y = 4/5x + 1 and 3/5
ReplyDeletedo you only simplify the slope if it's a whole number.....for example 8x/2 = 4x... it that right?.....but if the slope is 9x/2 i should NOT simplify it and keep it like that? just want to make sure.
ReplyDeleteIn the case of y = (4/5)x + 8/5, algebraticians will leave the 8/5 as is, rather than convert to a mixed number. I am glad that you find it easy to convert to a mixed number, but I do not understand how it is easier to do an additional step.
ReplyDeleteWhen converting to slope-intercept form, you need to EXTRACT the coefficient from the variable (typically x). Then, simplify the coefficient.
So:
8x/2 would simply to (8/2)x or just 4x.
9x/2 would simplify to (9/2)x.
N.B. I am using parentheses to clearly identify the coefficient as a leading multiplier. If I left it as 9/2x that could mean "9 over 2x" which is a valid algebraic expression, but not what we are working with at this time.
Good questions, Jamie and Charmi... glad you asked!!
Mr. C.
for # 11-16, im a little confused by what they are asking for
ReplyDeleteThey are asking for the SLOPE and the y-INTERCEPT of the line. Since some of the lines are in slope-intercept form, you should be able to identify the SLOPE and y-INTERCEPT fairly easily. In the case where the line is not is slope-intercept form, you should be able to manipulate the equation into slope-intercept form.
ReplyDeleteSlope-intercept form is "y = mx + b" where m is the slope and b is the y-intercept... often expressed as an ordered pair i.e. (0, b).
Ca-peesh?
... and who are THEY anyway???
ReplyDeletethis pertains to problem set C, do we graph 4b? because it would not fit on the graph
ReplyDeletethey are the crazy mean people who are working with the society of unhappy children with no logic sense.. yup. they are coming to get us. BE AFRAID!!!! HIDE. Personally i would hide in the closet... anyway jamie try re-scaling the graph to fit you needs...
ReplyDelete