X-Intercepts & Y-Intercepts

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Presentation transcript:

X-Intercepts & Y-Intercepts Graphing

Bellwork Complete task Unit 4 Lesson 2 Task #2 on Page 5 in your workbook. This will be graded for as a classwork grade at the end of the unit.

Objective Find x- and y-intercepts Use x and y intercepts to graph a line

What are the x- and y-intercepts? The x-intercept is where the graph crosses the x-axis. The y-coordinate is always 0. The y-intercept is where the graph crosses the y-axis. The x-coordinate is always 0. (2, 0) (0, 6)

How to find To find the x-intercept, set y = 0 To find the y-intercept, set x = 0

Find the x-y-intercepts and graph To find the x-intercept, make y = 0 Solve for x (divide by 4) The x intercept is

Find the x-y-intercepts and graph To find the y-intercept, make x = 0 Solve for y The y intercept is

Graph: 4x + y = 5 x-intercept is (1.25, 0) y-intercept is (0, 5)

Classwork In groups of 2, complete Unit 4 Lesson 2 Task #4 on page 8 This will be graded as classwork activity at the end of this unit

Find the x-y-intercepts and graph To find the x-intercept, make y = 0 Solve for x (divide by 4) x-int: (1, 0) To find the y-intercept, Make x = 0 y-int: (0, -1)

Graph: x – y = 1 x-intercept is (1, 0) y-intercept is (0, -1)

Find the x-y-intercepts and graph To find the x-intercept, make y = 0 Solve for x (divide by 4) x-int: (8, 0) To find the y-intercept, Make x = 0 y-int: (0, 2)

Graph: x + 4y = 8 x-intercept is (8,0) y-intercept is (0, 2)

Complete page 12.