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# Y=mx+b Calculator

Top
 Y = mx + b is the equation of a straight line and it is also known as slope-intercept form. Here, x, y are the coordinates, m is the slope of the line and b is the y-intercept. Slope of the line, m = $\frac{change \ in \ value \ of \ y}{change \ in \ value \ of \ x}$Plug in the slope and y-intercept value into the Y = mx + b calculator and get the equation of a line.

## Steps

Step 1 : Put down the slope and y-intercept value of the given question.

Step 2 : Apply those values into the formula, $y = mx + b$ and get the equation of a line.

## Problems

Here are the problems based on Y= mx + b below.

### Solved Examples

Question 1: Find the equation of a line whose slope is 2 and y-intercept is -1.

Solution:

Step 1 : Given :
Slope of line, m = 2
y-intercept, b = -1

Step 2 : Equation of line is,
$y = (2)x + (-1)$
$y = 2x - 1$

Therefore, the equation of line is $y = 2x - 1$.

Question 2: Find the equation of a line whose slope is 4 and y-intercept is -2.

Solution:

Step 1 : Given :
Slope of line, m = 4
y-intercept, b = -2

Step 2 : Equation of line is,
$y = (4)x + (-2)$
$y = 4x - 2$

Therefore, the equation of line is $y = 4x - 2$.