The line y = -2x + 5 is graphed below. 5
4
2
1
1
1 2 3 4 5 6
-6 -5 -4 -3 -2 -1 0
-1
-2
--3
--4
-5
--6
What is the value of x when y is -3?
O-1
01
4
11

By evaluating the equation, we will see that when y = -3, the value of x is 4.

Evaluating an equation means that we need to replace the variable by a given number.

Here we want to evaluate the line:

y = -2x + 5

in y = -3

Then we have:

-3 = -2x + 5

Now we need to solve this for x.

-3 - 5 = -2x

-8 = -2x

-8/-2 = x = 4

When y = -3, the value of x is 4.

If you want to learn more about linear equations, you can read:

link

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step-by-step explanation: