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IA5-6 A/B Level- Finding the equation from two points

Last updated over 4 years ago
6 questions
We can use subtraction to find the change in y and the change in x (slope) of a line when we don't have a graph at all. The formula is:
The little 1's and 2's don't have a numerical value, but they name the points for us so we can put the correct x's and y's in the formula.
Once we have the slope, we can use it and one of the points (it doesn't matter which) to find the equation the way we did in the last section of this unit.
To see the whole thing in action, watch the video below.
1

What is the slope of the line that goes through the points (4, 8.5) and (-11, 53.5)? Please be aware you will be expected to show work on this portion of the test.

1

What is the y-intercept of the line that goes through the points (4, 8.5) and (-11, 53.5)? Please be aware you will be expected to show work on this portion of the test.

1

What is the equation of the line that goes through the points (4, 8.5) and (-11, 53.5)? Please be aware you will be expected to show work on this portion of the test.

To see that problem completed, watch the video below.
1

What is the slope of the line that goes through the points (26,66) and (50,78)?

1

What is the equation of the line that goes through the points (26,66) and (50,78)?

1

What is the equation of the line that goes through the points (-8,63) and (10,-9)?