Skip to lesson

Choose “Save as PDF” in the print dialog to keep a copy.

Cogito

Grade 8 Math · Chapter 3 · Lesson 5

Practice Worksheet

Comparing Lines in Different Forms

A table, a graph, and an equation, side by side.

10 problems · about 19 minutes · 8.F.A.2

NameDate

Figure — use these to answer the problems

Set a slope and a starting value and see the line they describe.
-10-10-5-5551010
y = 2x + 3
Slope2
Starting value3
Figure 1

Warm-Up Review

From earlier lessons. Loosen up before the new work.

3 problems

  1. From “Unit Rate as Slope”

    A proportional line through (7, 28). What is its slope?

    Answer

  2. From “Slope from Two Points”

    Through (1, 2) and (4, 11). Slope?

    Answer

  3. From “y = mx + b”

    y = 3x − 4. What is y when x = 6?

    Answer

Warm Up

Straightforward practice. Get the method working first.

3 problems

  1. At x = 0, y = 8; at x = 5, y = 33. What is the slope?

    Answer

  2. In y = 2x + 9, what is the starting value?

    Answer

  3. In y = −3x + 1, what is the slope?

    Answer

Build It Up

The same ideas with more to keep track of.

2 problems

  1. At x = 0, y = 5; at x = 4, y = 17. What is the slope?

    Answer

  2. Of slopes 4 and 6, which relationship grows faster? Give the number.

    Answer

Stretch Yourself

Mixed problems. Work out what kind of question it is before you start.

2 problems

  1. The Equation

    In y = 7x + 4, what is the slope?

    Answer

  2. The Table

    At x = 0, y = 12; at x = 3, y = 21. What is the slope?

    Answer