Download Article Show Download Article On their own, y-intercepts aren’t complicated at all—they’re simply points where the graph of the equation intersects with the Y-axis.[1] But how are you supposed to find a y-intercept when you only have a limited amount of info on hand? Thankfully, it’s not nearly as hard as it looks. We’ll walk you through all the major ways to find the y-intercept when you already have the slope and a point, two points, or just want to use a simple equation. With a little practice, you can make quick work of any y-intercept problem that comes your way.
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Advertisement About This ArticleArticle SummaryX To find the y intercept using the equation of the line, plug in 0 for the x variable and solve for y. If the equation is written in the slope-intercept form, plug in the slope and the x and y coordinates for a point on the line to solve for y. If you don't know the slope, calculate it by dividing the rise of the line by the run. If you want to find the y-intercept if you only know 2 points along the line, keep reading the article! Did this summary help you? Thanks to all authors for creating a page that has been read 1,137,120 times. Did this article help you?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 = − 7 x + 4 , we see that the y-intercept of the line is 4.
How do you solve for yThe standard form of a quadratic equation is written as y=ax2+bx+c, where x and y are variables and a, b, and c are known constants. To find the y-intercept from a quadratic equation, substitute 0 as the value for x and solve. The y-intercept is always equal to the value of c in the equation.
How do you find the slope and yIn the equation of a straight line (when the equation is written as "y = mx + b"), the slope is the number "m" that is multiplied on the x, and "b" is the y-intercept (that is, the point where the line crosses the vertical y-axis). This useful form of the line equation is sensibly named the "slope-intercept form".
What is the slope yThe slope-intercept form of a line is: y=mx+b where m is the slope and b is the y-intercept. The y-intercept is always where the line intersects the y-axis, and will always appear as (0,b) in coordinate form.
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