2. -x^2 -7
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Move down -7 units
1. Determine a relationship between x- and y-values. Write an equation.
{(1, -1), ( 2, -2), (3, -3), (4, -4)
A: x = -y?
2. How am I supposed to graph y = -x^2 - 7?
2 answers
you already asked that first question
http://www.jiskha.com/display.cgi?id=1383600600
y = -x or x+y=0
2. you should know what y = x^ looks like
reflect it in the x-axis to get y = -x^2
drop it 7 units to get your graph
or
make a table of values of about 8-10 points
e.g (0, -7) , (1, -8), (2, -11) etc
plot them and join with a smooth curve.
should look like this:
http://www.wolframalpha.com/input/?i=plot+y+%3D+-x%5E2+-+7
http://www.jiskha.com/display.cgi?id=1383600600
y = -x or x+y=0
2. you should know what y = x^ looks like
reflect it in the x-axis to get y = -x^2
drop it 7 units to get your graph
or
make a table of values of about 8-10 points
e.g (0, -7) , (1, -8), (2, -11) etc
plot them and join with a smooth curve.
should look like this:
http://www.wolframalpha.com/input/?i=plot+y+%3D+-x%5E2+-+7
7 answers