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Question 970410: when working with usein intercepts graphing linear equations how do you know which numbers to use take y=8x-2. I need to understand ho to get the correct numbers to solve and graph. I understand how to put it on the graph if i have correct ordered pair.
Answer by josgarithmetic(39620)   (Show Source):
You can put this solution on YOUR website! Coordinate for horizontal axis is x.
Coordinate for vertical axis is y.
Two dimensional ordered pair coordinates are indicated in a form, (x,y).
The equation is shown as y in terms of x. Beginners can make a table of x & y values to identify (x,y) points and then plot them on graph paper.
Pick x________|_________Find y
____-2________|_______8(-2)-2=-18
____-1________|_______8(-1)-2=-10
______0_______|________8*0-2=-2
_____3________|_______8*3-2=22
_____4________|_______8*4-2=30
The corresponding points to be plotted for making a graph are:
(-2,-18), (-1,-10), (0,-2), (3, 22), (4,30).
A graph should be consistant with this, and contains whatever points you found:'
Axes are different scale sizes:
A close-up using same scale size for each axis:
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