graph the equation by plotting three points -x+2y=11
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OpenStudy (anonymous):
can some please help me
OpenStudy (anonymous):
Solve for the format
\[y = mx+b\]
than substitute the x values 1, 2 and 3 into the linear equation.
Solve for y and now you have a point (x, y) now you can plot it on a graph. |dw:1375585529599:dw|
OpenStudy (anonymous):
how do i change it to y=mx+b form
OpenStudy (anonymous):
first bring the x over to the right side..
-x +x +2y = x + 11
than you get
2y = x + 11
than divide both sides by 2
2y = x +11
-- ------
2 2
OpenStudy (anonymous):
so 1y=2x+11/2
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OpenStudy (anonymous):
Not quite... If you divide x by two what do you get ?
OpenStudy (anonymous):
0.5
OpenStudy (anonymous):
good 0.5x
OpenStudy (anonymous):
now you have a equation
y = 0.5x + 11/2
can you put different numbers in for x and solve for y.
ex
y = 0.5(0) +11/2
y = 0 + 11/2
y = 11/2
*** Now I have a point (0 , 11/2) which I can plot on a graph.
OpenStudy (anonymous):
i cant plot 11/2 it had to be a whole number
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OpenStudy (anonymous):
Than you can choose a point
ex
y = 0.5(1) + 11/2
y = 0.5+ 5.5
y = 6
*** than plot (1,6)
OpenStudy (anonymous):
ok can you please help me find x values and than i will do the y
OpenStudy (anonymous):
alright.. can you do
x = 3 and x = -1
OpenStudy (anonymous):
3,7 and -1,5
OpenStudy (anonymous):
Good can you plot them ?
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