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## High School Senior for Math, Science, and Computer Science Tutoring

### Cedar Park, TX (78613)

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# Zack's Responses in WyzAnt Answers

#### function g(x) =-x+3 a)Determine the range value when the domain value is -2 b)Determine the domain value when the range value is 0

I don't remember how to do the question

+ more- less
Asked by Mathalina from Louisville, KY
10

### Zack's Answer:

In all of the math classes I have taken, range typically references the y values and domain references the x values. Also g(x) is the y value

Therefore:

a)find range(y) value when domain(x) = -2

y = -(-2) + 3        Substitute -2 in for x

y = 2 + 3             Multiply -2 by -1

y = 5                   Add 2 + 3

b) find domain(x) value when the range(y) value = 0

(0) = -x + 3         Substitute 0 in for g(x) or y

-3 = -x                Subtract 3 from both sides

x = 3                   Divide both sides by -1

#### how to simplify -15/35x - 7

how can i simplify this

+ more- less
Asked by Emilina from Bronx, NY
00

### Zack's Answer:

I am going to assume by simplify you mean find the value of x. I am also assuming that the variable x is being multiplied by the denominator not the entire fraction from the way you wrote it.

-15/35x -7 = 0           set up the initial equation

-15/35x = 7               add 7 to both sides

-15 = 245x                multiply both sides by 35x

-15/245 = x               divide both sides by 245

-3/49 = x                   simplify the fraction

Just because I am unsure about how the equation that you posted is set up I will solve it assuming that the equation is (-15/35)x - 7

(-15/35)x - 7 = 0        set up the initial equation

(-3/7)x - 7 = 0           simplify the fraction

(-3/7)x = 7                add 7 to both sides

x = -49/3                  multiply both sides by -(3/7)

Zack Misso

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