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How do you solve this equation using both variables x-3y equals -9?
Wiki User
∙ 14y ago
6
Trent Rodriguez
Wiki User
∙ 14y agoThe solution is not a number, but a line. Graph it.
x - 3y = -9
standard form is y=mb+c so solve for y
-3y = -x + -9
y = (1/3)x + 3
This gives the slope of (1/3) and the y-intercept of 3.
All (x,y) coordinates along this line are solutions to the equation.■
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You cannot solve one linear equation in two variables. You need two equations that are independent.
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