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Which of the points lies on the graph of the linear equation x - 2y equals 7?
Wiki User
∙ 12y ago
First of all, you should set up the equation into y= form, so it'll be easier.
Move everything around until you have y on one side by itself.
You started with:
x-2y=7
-2y=7-x ;Subtract the x
y=(-7/2)+(1/2)x ;Divide everything by two
That is your y=.
Now to find your points, just substitute a number (whether you prefer a whole number or a fraction) into either x or y and solve for the other variable. For example, I'm going to substitute 1 for x and solve for the y:
y=(-7/2)+(1/2)(1) ;Substitute 1 for x
y=(-7/2)+(1/2) ;Multiply 1 times one half
y=(-6/2) ;Add the fractions
y=-3 ;Reduce the fraction
ONE of the points that lies in that graph would be (1,-3).
Wiki User
∙ 12y ago
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