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15 Cards in this Set
- Front
- Back
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Define Coordinate plane
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x-axis, y-axis, which insects at the origin. The axes divide the plane into four quadrants
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Where is quadrant I?
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Upper Right, both x and y axis are positive
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Where is quadrant II?
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Upper Left, x axis is negative, y axis is positive
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Where is quadrant III?
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Lower Left, both x and y axis are negative
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Where is quadrant IV?
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Lower Right, X axis is positive, y axis is negative
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What will the point look like for a y intercept?
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(0,Y)
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What will the point look like for a x intercept
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(X,0)
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how do you find the distance between two points on a horizontal line?
Vertical line? |
Subtract their coordinates
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How do you find the distance between two points that are not the same horizontal or vertical line?
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Pythagorean theorem
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The distance between two points can be calculated using what formula?
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The distance formula
d = (x2 - x1)sq + (y2 - y1)sq All of the above squarerooted This is just the pythagorean theorem if you draw out the missing lines. |
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What information does the slope of a line tell us?
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The rate of change and pattern of a graph
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What is the formula for calculating slope from two points?
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s = (Y1-Y2)/(X1-X2)
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What is the slope of any horizontal line?
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RS = 1-1 over 4 - (-2) = 0 over 6 = 0
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What is the formula for a positive slope?
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RT = 4-1 over 1 - (-2) = 3 over 2
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What is the formula for a negative slope?
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1-4 over 4-0 = -3 over 4 = negative (3 over 4)
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