How do you find the x intercept and y-intercept?

College Algebra

1. 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.
2. To find the x-intercept, set y = 0 \displaystyle y=0 y=0.
3. To find the y-intercept, set x = 0 \displaystyle x=0 x=0.

How do you find the X intercept on a graphing calculator?

Press the “2nd” key then the “Calc” key. This accesses the trace menu. Scroll down to “Zero” and press “Enter.” Using the arrow keys, scroll to the left of the X intercept and press “Enter.” Scroll to the right of the intercept and press “Enter'” twice. The X intercept will be displayed the bottom of your screen.

What is the formula for y-intercept?

The y-intercept formula says that the y-intercept of a function y = f(x) is obtained by substituting x = 0 in it. Using this, the y-intercept of a graph is the point on the graph whose x-coordinate is 0. i.e., just look for the point where the graph intersects the y-axis and it is the y-intercept.

How do you find the x and y intercepts given two points?

Approach:

1. Find the slope using the given points.
2. Put the value of the slope in the expression of the line i.e. y = mx + c.
3. Now find the value of c using the values of any of the given points in the equation y = mx + c.
4. To find the x-intercept, put y = 0 in y = mx + c.
5. To find the y-intercept, put x = 0 in y = mx + c.

How do you find the y-intercept of a line?

How Do You Find the X- and Y-Intercepts of a Line in Slope-Intercept Form? To find the x-intercept of a given linear equation, plug in 0 for ‘y’ and solve for ‘x’. To find the y-intercept, plug 0 in for ‘x’ and solve for ‘y’.

How do you find the y-intercept of a graph?

According to the definition of y-intercept, the y-intercept of a graph is the point where it cuts (or) intersects the y-axis. We know that on the y-axis the x-coordinate is 0. Hence the formula to find the y-intercept of a function y = f(x) is just substituting x = 0 and solving for y.

How do you find the y-intercept when given two points?

Steps

1. Calculate the slope from 2 points. For Example, Two points are (3, 5) and (6, 11)
2. Substitute the slope(m) in the slope-intercept form of the equation.
3. Substitute either point into the equation. You can use either (3,5) or(6,11).
4. Solve for b, which is the y-intercept of the line.
5. Substitute b, into the equation.

What is an example of a y-intercept?

The y -intercept of a graph is the point where the graph crosses the y -axis. For example, we say that the y -intercept of the line shown in the graph below is 3.5 . When the equation of a line is written in slope-intercept form ( y=mx+b ), the y -intercept b can be read immediately from the equation.

What is the y-intercept of y =- 2x?

0,0
The y-intercept is (0,0) .

How do you find the x intercept of Y?

If you just have a simple equation like y=mx+b, you would find the x-intercept by substituting 0 for y and solving for x. If it’s a quadratic equation, you’d solve by either factoring or using the quadratic equation.

What is the formula for finding y intercept?

The y-intercept is the point at which a linear equation crosses the y-axis on the x=0 plot point. The equation to determine both the slope and the y-intercept of a line is y=mx+b.

What is the equation for X and y intercept?

X-Intercept. A linear equation has the form y = mx + b, where M and B are constants. The x-intercept is the point where the line crosses the x-axis. By definition, the y-value of a linear equation when it crosses the x-axis will always be 0, since the x-axis is stationed at y = 0 on a graph. Consequently, to find a y-intercept,…

How do I find the y intercept?

Find the Y intercept. Press the “Trace” button. Press the “0” button. This will move the cursor to the Y intercept where X = 0. Look at the bottom of your screen; the Y-intercept will be displayed there.