What is the slope of the line that passes through the points (2,1) and (8,9)?

-1

Step-by-step explanation:

To calculate slope:

m==

( and )= coordinates of the first points in the line

( and )= coordinates of the second points in the line.

So slope =

=

1 divided by -1 is -1

HOPE THIS HELPED

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c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.