Solve y = (2/5)x + 2 When x Equals 2: Linear Equation

Find y y when x=2 x=2

y=25x+2 y=\frac{2}{5}x+2

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Find Y according to the given X value
00:07 Substitute the X value according to the given
00:17 Raise the product to the numerator
00:21 Calculate the product
00:27 Convert from fraction to decimal
00:37 Insert this decimal fraction in the exercise and continue solving
00:47 Let's sum up
00:52 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Find y y when x=2 x=2

y=25x+2 y=\frac{2}{5}x+2

2

Step-by-step solution

In this exercise, we are given the value of X, so we will substitute it into the formula.

It's important to remember that between an unknown and a number there is a multiplication sign, therefore:

y=25⋅(2)+2 y=\frac{2}{5}\cdot(2)+2

y=45+2 y=\frac{4}{5}+2

Let's convert to a decimal fraction:

y=0.8+2 y=0.8+2
y=2.8 y=2.8

And that's the solution!

3

Final Answer

2.8 2.8

Practice Quiz

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Find a y when \( x=2 \)

\( y=5x \)

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