What is the Slope Intercept Form?A line in the two-dimensional Cartesian coordinate plane can be described as a relationship between the vertical and horizontal positions of points which belong to the line. This relation can be written as $y =f(x)$. One of the form of the line in the two-dimensional Cartesian coordinate plane is the slope intercept form, $y = mx + b$, where $m$ and $b$ are real numbers. For example, the graphical representation of the line $y=8x+10$ is given in the picture below. So, the slope is $8$ and the $y$-intercept is $10$. This means that the line passes thought point $(0,10)$. The slope intercept work with steps shows the complete step-by-step solution for this example. Show The slope of a line in the two-dimensional Cartesian coordinate plane is usually represented by the letter $m$, and it is sometimes called the rate of change between two points. This is because it is the change in the $y$-coordinates divided by the corresponding change in the $x$ -coordinates between two distinct points on the line. If we have coordinates of two points $A(x_A,y_A)$ and $B(x_B,y_B)$ in the two-dimensional Cartesian coordinate plane, then the slope $m$ of the line through $A(x_A,y_A)$ and $B(x_B,y_B)$ is fully determined by the following formula $$m=\frac{y_B-y_A}{x_B-x_A}$$ In other words, the formula for the slope can be written as $$m=\frac{\Delta y}{\Delta x}=\frac{{\rm vertical \; change}}{{\rm horizontal \; cnahge}}=\frac{{\rm rise}}{{\rm run}}$$ As we know, the Greek letter $\Delta$, means difference or change. The slope $m$ of a line $y=mx+b$ can be defined also as the rise divided by the run. Rise means how high or low we have to move to arrive from the point on the left to the point on the right, so we change the value of $y$. Therefore, the rise is the change in $y$, $\Delta y$. Run means how far left or right we have to move to arrive from the point on the left to the point on the right, so we change the value of $x$. The run is the change in $x$, $\Delta x$. The slope $m$ of a line $y=mx+b$ describes its steepness. For instance, a greater slope value indicates a steeper incline. There are four different types of slope:
The $y$-intercept of a line is the point $(0,b)$ at which the line crosses the $y$-axis. It is usually denoted by $b$. There are three ways to find the $y$-intercept:
How to Find Slope Intercept Form of Line?From the general form of the line, $Ax+By+C=0,$ we obtain $$y=-\frac{A}{B}x-\frac{C}{B},\quad B\ne 0$$ Therefore, if $B\ne0$, then the slope is $m=-\frac{A}{B}$ and the $y$-intercept is $b=-\frac{C}{B}$. Real World Problems Using Slope and Slope Intercept FormThe fundamental applications of slope or the rate of change are in geometry, especially in analytic
geometry. But, the rate of change is also fundamental to the study of calculus. For non-linear functions, the rate of change varies along the function. \underline{The first derivative} of the function at a point is the slope of the tangent line to the function at the point. So, the first derivative is the rate of change of the function at the point. How do you write a linear equation in slopeThe slope intercept formula y = mx + b is used when you know the slope of the line to be examined and the point given is also the y intercept (0, b). In the formula, b represents the y value of the y intercept point.
How do you find the slope and yThe equation of the line is written in the slope-intercept form, which is: y = mx + b, where m represents the slope and b represents the y-intercept. In our equation, y = − 3 x + 5 , we see that the slope of the line is − 3 .
How do you solve a linear equation in pointThese are the two methods to finding the equation of a line when given a point and the slope:. Substitution method = plug in the slope and the (x, y) point values into y = mx + b, then solve for b. ... . Point-slope form = y − y 1 = m ( x − x 1 ) , where ( x 1 , y 1 ) is the point given and m is the slope given.. |