What is the equation for a straight line on the X-axis?
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What is the equation for a straight line on the X-axis?
Thus, if P(x, y) is any point on AB, then y = b. Hence, the equation of a straight line parallel to x-axis at a distance b from it is y = b. The equation of x-axis is y = 0, since, x-axis is a parallel to itself at a distance 0 from it.
How do you find the equation of a straight line when given two points?
Steps to find the equation of a line from two points:
- Find the slope using the slope formula.
- Use the slope and one of the points to solve for the y-intercept (b).
- Once you know the value for m and the value for b, you can plug these into the slope-intercept form of a line (y = mx + b) to get the equation for the line.
How do you find the equation of a straight line from two points?
How to Find the Equation of a Line from Two Points
- Find the slope using the slope formula.
- Use the slope and one of the points to solve for the y-intercept (b).
- Once you know the value for m and the value for b, you can plug these into the slope-intercept form of a line (y = mx + b) to get the equation for the line.
Whats the angle of a straight line?
180°
Angles on a straight line add up to 180°.
How do you find the equation of a straight line?
A line with slope m and y intercept c can be expressed through the equation y=mx+c We call this equation as the slope-intercept form of the equation of a line. · If a line with slope m, m≠0 makes x intercept d, then the equation of the straight line is y = m (x–d).
How to find the point slope form of a straight line?
The equation of the point-slope form of the straight line is y − y1 = m (x − x1) Find the equation of a line passing through the point A(1, 4) and perpendicular to the line joining points (2, 5) and (4, 7) . Let the given points be A(1, 4) , B(2, 5) and C(4, 7). Let m be the slope of the required line.
Which point belongs to the line at 30 degrees?
Since the angle for the line is 30, then : Since it cuts the y axis at +5 , then the point (0,5) belongs to the line: Start your 48-hour free trial and unlock all the summaries, Q&A, and analyses you need to get better grades now.
What is the equation for a line with a positive intercept?
A line makes positive intercepts on coordinate axes whose sum is 7 and it passes through (-3, 8) . Find its equation. Since a is positive, we have a = 3 and b = 7–a = 7–3 =4. Therefore, 4x + 3y −12 = 0 is the required equation.