Line f passes through points (9,10) and (1,1). Line g is perpendicular to f. What is the slope of like g?

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

W-16=-12 solve each one step equation plz

Rewrite the following quadratic functions in intercept or factored form. show your work. f(t) = 20t^2 + 14t - 12