Answer:
X=2, Y=-15
Step-by-step explanation:
-7x+y=-19
-2x+3y=-19
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-3(-7x+y)=-19
-2x+3y=-19
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21x-3y=57
-2x+3y=-19
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19x = 38
19x/19=38/19
x=2
now plug 2 into x of the second equation to get y=-15
Answer:
nonlinear
Step-by-step explanation:
To be linear, the power on x and y has to be 1
y = 1/x
y = x^-1
-1 is not the same as 1
This is not linear
Just draw what the instruction says and you will get the answer
It all depends on the speeds of the cars. If they are going the same speed, the lines could never cross. Or they could could cross once, if one car passes the other.
However, if the speeds are changing, then there could be multiple solutions.