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Equation of a line may be written as y = mx + c.

m is called the slope of the line.

c is the point where the line crosses the y axis.

If two points are given: (x1, y1) and (x2, y2), m is calculated as the y difference divided by the x difference:

m = (y2 - y1) / (x2 - x1)

Once you find m, you can find c by putting in the values into the equation y=mx+c. For example, if you use (x1, y1), you can do this:

y1 = m*x1 + c

take m*x1 to the other side:

y1 - m*x1 = c

Then you get the value of c. Now you have both m and c, so you can write the equation of the line:

y = mx + c

Put the values of m and c in. Leave y and x as it is.

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Q: How to find the equation of a line?

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An equation of a line requires two parameters. The slope, by itself, is not enough.

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Subtract the equation of one line from the equation of the other

By substitution

Substitute the coordinates of the point into the equation of the line. If the result is true, then the point is on the line.

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In order to find the equation of a tangent line you must take the derivative of the original equation and then find the points that it passes through.

An equation of a line requires two parameters. The slope, by itself, is not enough.

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By finding the line of best fit and using the straight line equation formula.

Subtract the equation of one line from the equation of the other

If the x intercept is a and the y intercept is b, then the equation of the line is bx + ay = ab

As for example in the straight line equation of y=3x+5 the slope is 3 and the y intercept is 5

By substitution

The question is suppose to read: Find the equation of the line tangent to y=(x²+3x)²(2x-2)³, when x=8

Substitute the coordinates of the point into the equation of the line. If the result is true, then the point is on the line.

So that you can plot out the points of a straight line on graph paper.

yes because you will need the slope and y-intercept to find the equation of a line and the point through which the line passes is the y-intercept so it is yes!!!!!!! Good Luck!!!!!!!!!!!!!