Triangle ABC has been rotated 90° to create triangle DEF. Write the equation, in slope-intercept form, of the side of triangle ABC that is perpendicular to segment EF. You must show all work to receive credit. Also please give an ACTUAL answer, ty!

Step-by-step explanation:

The side of ABC that is perpendicular to EF is BC so we will write an equation of it

The side BC crosses two khown points wich are B and C

The equation of this side will have this form :

y = mx+b

let's calculate m

so y= 1*x+b = x+b

let's find b

so the equation is:

y= x+1

i think its a and d

step-by-step explanation: