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Home > CC3 > Chapter 2 > Lesson 2.1.6 > Problem 2-60

2-60.

Use substitution to find y. Homework Help ✎

Wherever x occurs in the problem, write the given number instead.

  1. y = 3 + 8.5x, when x = −4

    Remember to include the negative sign when you substitute for x.

    −31

  1. y = x − 15, when x = 2.65

    What is 15 subtracted from 2.65?

  1. y = (x − 5)(x + 2), when x = 3

    Simplify the expression inside the parentheses before multiplying.

  1. y + 6.2x = −13, when x = −4

    y + 6.2(−4) = −13

    y + (−24.8) = −13

    y − 24.8 = −13

    y = 11.8