Question

Find the value of x so that the line passing through (10, 5) and (x, 9) has a slope of -2.

Answer 1

Use the slope formula.
\[m = \frac{y_1 - y_2}{x_1 - x_2} \implies -2 = \frac{9 - 5}{x - 10} \implies -2(x - 10) = 4\]Can yuo finish it up?

Answer 2

-2x+20=4 ?

Answer 3

Yes. Now what do you think you should do?

Answer 4

-2x = -16
Can you solve for x now?

Answer 5

=8 . thanks calcmathlete