Unit 2, Lesson 11

Writing Equations for Lines

Grade 8

Practice

Problem 1

Find the slope of each line.

Problem 2

Line is shown in the coordinate plane.

What are the coordinates of points and ?
Is the point on line ? Explain how you know.
Is the point on line ? Explain how you know.
Is the point on line ? Explain how you know.
Write a rule that would allow you to test whether is on line .

<p>Coordinate plane, first quadrant. Line l drawn through point A, the origin, point C at 4 comma 5, and point D at 8 comma 10. Dotted lines connect C and A, to point B at 4 comma 0.</p><br>

Problem 3

Consider the graphed line.

Mai uses Triangle A and says the slope of this line is . Elena uses Triangle B and says the slope of this line is 1.5. Do you agree with either of them? Explain or show your reasoning.

<p>Two right triangles with longest side on one line. Vertex A has horizontal distance 4 from the line, vertical distance 6. Vertex B has horizontal distance 1 from the line, vertical distance 1 point 5.</p><br>

Problem 4

ForLesson 7: Similar Polygons

A rectangle has dimensions 6 units by 4 units and is similar to quadrilateral . Select all statements that are true.

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