COMPLETE THE DO NOW SILENTLY, INDEPENDENTLY, & IMMEDIATELY Do-Now Does the point (3, 7) fit on the line Y = 2 X + 1? Does the point (-1, 4) fit on the line Y = X + 4? Does the point (2, 3) fit on the line Y = X + 2? HINT: substitute the point values into the equation and see if both sides are equal!
Objective & Essential Understanding OBJECTIVE: SWBAT graph using the slopeintercept form of a linear equation. ESSENTIAL UNDERSTANDING: To graph from a slope intercept form equation, start from the Y intercept and use the slope to find new points on the line.
Review of Intercepts
Silently think about the answer & jot down your ideas Review of Slope = Rise A slope of 3 = up 3 Run 1 over 1 Positive slopes go “uphill”; Negative slopes go “downhill”
What is the slope intercept form? Slope-Intercept Form: Y = m. X + B Y = 3 x + 2 Slope Y Intercept GO START
How do we graph from a slopeintercept equation I? Sample equation: Y = 2 X -1 1). We know the Y intercept is (0, -1) 2). We know the slope is 2
How do we graph from a slopeintercept equation II? Sample equation: Y = X + 3 1). The Y Intercept is: 2). The Slope is:
How do we graph from a slopeintercept equation III? Sample equation: Y = -2 X + 1 1). The Y Intercept is: 2). The Slope is:
How do we graph from a slopeintercept equation IV? •
How do we graph from a slopeintercept equation V? Sample equation: Y = 3 X -1 1). The Y intercept is: 2). The slope is: