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Let's quickly review the steps for writing an equation given two points: Find the slope using the slope formula. Write the equation using the slope and y-intercept. Ok, now let's apply this skill to solve real world problems. Now you will have to read through the problem and determine which information gives you two points.

Remember a point is two numbers that are related in some way.

Also remember, that when identifying a point from a word problem, "time" is always the x-coordinate. In the first year, there were 35 participants. In the third year there were 57 participants.

Write an equation that can be used to predict the amount of participants, y, for any given year, x.

Based on your equation, how many participants are predicted for the fifth year? Identify your two points. This can be written as 1,35 In the third year, there were 57 participants. This can be written as 3, Therefore, our two points are 1,35 and 3,57 Let's enter this information into our chart.

Now that we have an equation, we can use this equation to determine how many participants are predicted for the 5th year. All we need to do is substitute! We will substitute 5 for x x is the year and solve for y.The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept..

If you know the slope (m) any y-intercept (b) of a line, this page will show you how to find the equation of the line. A line has a slope of negative 3/4 and goes through the point 0 comma 8.

What is the equation of this line in slope-intercept form? So any line can be represented in slope-intercept form, is y is equal to mx plus b, where this m right over here, that is of the slope of the line.

And this . Find the Equation of a Line Parallel or Perpendicular to Another Line – Practice Problems Page 2 of 4 Detailed Solutions 1. Find the equation of a line passing through the point (4, –7) parallel to the line . In the last lesson, I showed you how to get the equation of a line given a point and a slope using the formula.

Anytime we need to get the equation of a line, we need two things. The equation of our line is y is equal to negative 5 thirds x plus our y-intercept which is 13 which is 13 over 3.

And we can write these as mixed numbers. if it's easier to visualize. 13 over 3 is four and 1 thirds. Practice: Linear equations in any form. Problem. graph. Write an equation that represents the line. Use exact numbers. Show Calculator. Stuck? Watch a video or use a hint.

Report a problem. Created with Raphaël. Stuck?

Watch a video or use a hint. Do 4 problems. Check. Do 4 problems.

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Slope-intercept equation from slope & point (video) | Khan Academy