Talia wants to write the equation of the graphed line in point-slope form. these are the steps she plans to use:

step 1: choose a point on the line, such as (2, 5).
step 2: choose another point on the line, such as (1, 3).
step 3: count units to determine the slope ratio. the line runs 1 unit to the right and rises 2 units up, so the slope is .
step 4: substitute those values into the point-slope form.

y – y1 = m(x – x1)

y – 3 = (x – 1)

which of talia’s steps is incorrect?

step 1 is incorrect because it uses a point that is not on the line.
step 2 is incorrect because it uses a point that is not on the line.
step 3 is incorrect because it shows an incorrect ratio for the slope.
step 4 is incorrect because it shows an incorrect substitution of (1, 3) into the point-slope form.

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why?

Write the contrapositive of the conditional statement. determine whether the contrapositive is true or false. if it is false, find a counterexample. a converse statement is formed by exchanging the hypothesis and conclusion of the conditional. a) a non-converse statement is not formed by exchanging the hypothesis and conclusion of the conditional. true b) a statement not formed by exchanging the hypothesis and conclusion of the conditional is a converse statement. false; an inverse statement is not formed by exchanging the hypothesis and conclusion of the conditional. c) a non-converse statement is formed by exchanging the hypothesis and conclusion of the conditional. false; an inverse statement is formed by negating both the hypothesis and conclusion of the conditional. d) a statement not formed by exchanging the hypothesis and conclusion of the conditional is not a converse statement. true

How can you find the mean absolute deviation (mad) for this set of data?