ACT Math 1.5 Coordinate Geometry
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ACT Math: Coordinate Geometry Drill 1, Problem 5. Which ordered pair is not on the line shown?
|ACT Math||Coordinate Geometry|
|ACT Mathematics||Coordinate Geometry|
|Algebra||Coordinates and Graphs|
The standard coordinate plane (x, y)
|Foreign Language||Arabic Subtitled|
Properties, dimension, and modeling
|Product Type||ACT Math|
Yup the line intersects the y-axis
at (0,1). (-4, -2)...yeah... the line intersects that
point in the bottom left-hand quadrant of the coordinate plane.
(-4, -1)...wait didn't we just have the x coordinate of -4 correspond with the y-coordinate
of negative 2?
The definition of functions tells us that that every input has one and only one output.
So if (-4,-2) is on the line... (-4,-1) can't be. Looks like our answer has to be C.
But just to be sure...(4,5) is on the line in the upper right hand corner here...
Last choice...(2, 2.5). The graph doesn't
have perfect tick marks...but it looks close enough...definitely more accurate than (-4,-1).
So our answer is indeed C.