Weegy: The y - intercept of the equation y = 1/2x - 3 is -3. Your answer is B. -3. vchutkan |Points 5904|
How do you calculate the y - intercept of a line?
Y Intercept Formula
- we just substitute x = 0 in it.
- solve for y.
- represent the y-intercept as the point (0, y).
How to calculate y intercept formula?
b is the y-intercept. We can use the following formula to calculate the y-intercept. y – a = m ( x – b ) a and b being a point on a line. Example: Suppose you have a straight line whose gradient is 3 and a point 2,1, calculate its y-intercept. Since the y-intercept is when x=0, therefore; y – 2 = 3 ( x – 1 ) y – 2 = 3x – 1. y = 3x – 1. Therefore, the number that has replaced b is -1, which means that -1 is the y-intercept.
What is the formula for finding y intercept?
y-intercept = b = B/C. Alternatively, To find the x-intercept, substitute y = 0 and solve for x. i.e. Ax + B(0) = C. Ax = C. x = C/A. To find the y-intercept, substitute x =0 and solve for y. i.e. A(0) + By = C. By = C. y = C/B. Go through the example given below to understand this concept in a better way. Example: Let us assume the straight-line equation 5x +2y =10
How do you calculate X and y intercept?
- To determine the x-intercept, we set y equal to zero and solve for x. Similarly, to determine the y-intercept, we set x equal to zero and solve for y. …
- To find the x-intercept, set y = 0 displaystyle y=0 y=0.
- To find the y-intercept, set x = 0 displaystyle x=0 x=0.
What is the slope and intercept of y =- 1 2x 3?
1 Answer. slope = 1/2, y-int = -3.
What is the y-intercept of the equation 2x y 3?
The x -intercept is 1.5 , and the y -intercept is −3 .
What is the slope of the equation of a line 2x y 3?
Subtract 2x 2 x from both sides of the equation. Reorder 3 3 and −2x - 2 x . Using the slope-intercept form, the slope is −2 .
How do you find a y-intercept of a line?
To find y-intercept: set x = 0 and solve for y. The point will be (0, y). To find x-intercept: set y = 0 and solve for x.
What does the line y 2x 3 look like?
0:302:00Graph y = 2x + 3 - YouTubeYouTubeStart of suggested clipEnd of suggested clipWe know that's at 3. So I graph the point 0 3 crosses y axis at 3 a slope of 2 means that I have aMoreWe know that's at 3. So I graph the point 0 3 crosses y axis at 3 a slope of 2 means that I have a rise over run of 2 over 1 in other words every time our graph goes up two goes over 1.
What is the y-intercept of the equation y?
If the linear equation is given, solve algebraically to find the y-intercept. Since the y-intercept always has a corresponding x-value of 0, replace x with 0 in the equation and solve for y. On a graph, the y-intercept can be found by finding the value of y when x=0.
What is the y-intercept of 2x y 2?
y -intercept =−2 , x -intercept =−1 .
How do I write slope-intercept form?
The slope-intercept form is written as y = mx+b, where m is the slope and b is the y-intercept (the point where the line crosses the y-axis). It's usually easy to graph a line using y=mx+b. Other forms of linear equations are the standard form and the point-slope form. Equations of lines have lots of different forms.
How do you graph slope and y-intercept?
Graphing a Line Using the Slope and Y-InterceptFind the y-intercept = b of the equation y = mx + b.Plot the y-intercept. The point will be (0, b).Find the slope=m of the equation y = mx + b.Make a single step, using the rise and run from the slope. ... Connect those two points with your line.
How do you find the intercept?
To find the x-intercept of an equation, set the value equal to zero and solve for . Subtract from both sides.
What is the y-intercept of y =- 3?
Using the slope-intercept form, the y-intercept is 3 .
How do you find the y-intercept without a graph?
Using the "slope-intercept" form of the line's equation (y = mx + b), you solve for b (which is the y-intercept you're looking for). Substitute the known slope for m, and substitute the known point's coordinates for x and y, respectively, in the slope-intercept equation. That will let you find b.
What is the only equation where c is equal to 4?
The quadratic e quation is written in standard form. This makes it easier to identify the y-intercept, because c always represents the y-intercept. The graph shows a quadratic equation that intersects the y-axis at 4, and the only equation where c is equal to 4 is Choice B. Hide Answer.
How to find the y intercept?
Below are three ways to identify the y-intercept on a graph, in a table, or with an equation: First, identify the slope and a point on the graph.
