### Home > CCA > Chapter A > Lesson A.1.5 > ProblemA-57

A-57.

For each equation below, evaluate y for the given value of x. Homework Help ✎

1. $y=2+4.3x \text{ when }x=−6$

Substitute −6 in for x. y = 2 + 4.3(−6)

Multiply and simplify.

y = 2 + (−25.8)

y = −23.8

1. $y=(x−3)^2\text{ when }x=9$

Follow the steps in part (a).

Remember to use the Order of Operations.

1. $y = x − 2 \text{ when } x = 3.5$

Begin by substituting 3.5 for x in the equation.

1. $y = 5x − 4 \text{ when } x = −2$

Rewrite the equation as y = 5(−2) − 4.

−14