Graphing Review
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Graphing Review
y = mx + b SLOPE Y-INTERCEPT: where the line will “hit” the y-axis
y = 2x + 3 Y-INTERCEPT
SLOPE: “2 up, 1 across”
y
y = (3/2)x – 5 Y-INTERCEPT SLOPE: “3 up, 2 over”
y = (-1/2)x – 4 Y-INTERCEPT SLOPE: “1 down, 2 over”
3x + y = 3
WARNING! “Y” IS NOT BY ITSELF !
3x + y = 3
3x
-3x
y = 3 – 3x Y-INTERCEPT SLOPE: “down 3, over 1”
y = (2/3)x + 7
2x + y = -4
-2x
-2x
y = -4 – 2x
y = mx + b SLOPE Y-INTERCEPT: where the line will “hit” the y-axis
y = 2x + 3 Y-INTERCEPT
SLOPE: “2 up, 1 across”
y
y = (3/2)x – 5 Y-INTERCEPT SLOPE: “3 up, 2 over”
y = (-1/2)x – 4 Y-INTERCEPT SLOPE: “1 down, 2 over”
3x + y = 3
WARNING! “Y” IS NOT BY ITSELF !
3x + y = 3
3x
-3x
y = 3 – 3x Y-INTERCEPT SLOPE: “down 3, over 1”
y = (2/3)x + 7
2x + y = -4
-2x
-2x
y = -4 – 2x
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