Y=-2x+8; D: -4,-2,0,2,4

Mathematics

1 answer:

Westkost [7]3 years ago

7 0

Answer:

Step-by-step explanation:

Have to assume that you're supposed to "solve y = -2x + 8" for some value of x. If that value happens to be -2, then y = -2x + 8 becomes

y = -2(-2) + 8 = 12.

Check to ensure that you have copied down the entire problem, including the instructions.

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3 years ago

Raul simplified the expression, as shown below.

Softa [21]

Answer:

Raul's errors are in the application of the distributive property(he applied it wrongly), in not respecting the precedence of operations, and in the multiplication of two terms with the same base(we add the exponent).

Step-by-step explanation:

Distributive property:

The distributive property of multiplication is:

a*(b + c) = a*b + a*c

Precedence of operations:

First multiplication, then addition.

Multiplication of terms with the same base:

The multiplication of h*h = h², which Raul missed.

The correct simplification is given by:

$-[3h + 7h(2-h)] = -[3h + 14h - 7h^2] = -[17h - 7h^2]=7h^2 - 17h$