MAT_1143_feb_11

# MAT_1143_feb_11 - Click to edit Master subtitle style...

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Unformatted text preview: Click to edit Master subtitle style February 11, 2011 Sections 2.7-2.8 Reminder • Exam 1 will be on Friday, Feb. 18 (1 week away). • It will cover material from 1.1 through 2.9 Review • Important topics for upcoming exam are on a review sheet. • Also in a separate course document at MySBU • What if we have one point (not y-intercept) and the slope? – For example, through (2,4) with slope 3. – Can still construct a graph (just like we did when given y-intercept and slope) – (2,4) is on the line. – With slope of 3, point a rise of 3 and run of 1 also on the line – So-which point is on the line? • A (5,5), B: (3,7) C: (3,5) , D: (2,7). – From there we can graph the line. Graph? Equation? • What if we have one point (not y-intercept) and the slope? – For example, through (2,4) with slope 3. – y = b+mx still works, but b is our unknown. – Plug in the three values we have • A: 2 = b+3*4, B: 2=b+3*2, • C: 4 = b+3*2, D: 4 = b+3*4 – 4 = b+6 – b = -2 – y = -2+3x •...
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MAT_1143_feb_11 - Click to edit Master subtitle style...

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