Question

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Answer 1

In your point, y is 3 and x is 2.  You have to fill in these values for x and y into each equation in A-D to see which one is "true".  Let's start with A.  y = -3x.  Filling in 3 for y and 2 for x gives us 3 = -3(2).  Does 3 equal -6?  Of course not.  So let's try B.  y = x - 1.  3 = 2 - 1.  Does 3 = 1?  Of course not!  Let's try C.  y = 3x...3 = 3(2).  3 doesn't equal 6 either, so...last one.  y = x + 1 is 3=2+1.  Does 3 = 3?  Yes!  Finally! So the point on the coordinate plane is one the line represented by D.