Math 8 Chapter 4 Practice Test - Davis School District Page 3

Determine & describe m & b. Then write the equation. Use the table if necessary.

29. The T-shirt Shop sells custom t-shirts. One company orders 30 shirts and the total cost of their

order is $170. Another company orders 20 shirts and the total cost of their order is $130.

m (unit rate) = _________b = _______

equation: ____________________

shirts cost

Use what you are given write the equation of the line in slope-intercept form: y=mx+b

30.

31.

Determine & interpret the ordered pair for which the two

equations are the same. ________________

Which company should the principal choose to print 200 books? ________

Write the equation of the line in slope-intercept form (y=mx+b).

32. y = _________________ 33. y = _________________

34. y = _________________

Slope is

y-intercept is (0,-5)

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