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Warm-Up. Homework Check Slope and introduction to slope-intercept.

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Presentation on theme: "Warm-Up. Homework Check Slope and introduction to slope-intercept."— Presentation transcript:

1 Warm-Up

2 Homework Check

3 Slope and introduction to slope-intercept

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8 An equation whose graph is a line is a Linear Equation. Examples of Linear Equations:

9 The y-intercept is the y-coordinate of the point where a line crosses the y-axis. Y-intercept: SLOPE: (rate of change)

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13 Step 1: Write the slope-intercept form equation Step 2: Substitute the given slope or find it given two points Step 3: Substitute the y-intercept from Ex) Write an equation of the line with

14 Write the equation of a line that goes through the points (-3, 2) and (-6, 5) with a y-intercept of 7.

15 Write the equation of a line that goes through points (1,5) and (3, 9)

16 Step 1: Find two points on the graph. Step 2: Find the slope of those points Step 3: Determine the y-intercept Step 4: Write the equation of the line

17 Write an equation of the line:

18 Write the equation of the line:

19 Graphing a line given the equation Step 1: Graph the y-intercept. Step 2: Using the slope, graph a second point on the line. Step 3: Draw a line through the two points

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22 The base pay of a water-delivery person is $210 per week. He also earns 20% commission on any sale he makes. The equation t= s relates total earnings t to sales s. Graph the equation.

23 Homework


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